{"success":true,"course":{"concept_key":"CONCEPT#8b1356b16b5acd03ab88fce163bf429d","final_learning_outcomes":["Set a realistic fitness target, define checkpoints, and choose behavior goals you can sustain","Record baseline strength/core/cardio metrics and know how to retest them consistently","Explain progressive overload and apply it using reps, sets, or load while respecting recovery","Choose training emphases (strength vs muscle gain) that match your goal","Use basic technique cues to improve squat/hinge/lunge mechanics and reduce common faults","Use RPE/RIR to select training loads without ego-lifting","Assemble a simple weekly beginner A/B strength plan and know how to progress it","Add steady cardio and/or HIIT and schedule it in a way that minimizes interference with lifting","Use calorie balance and protein targets to align nutrition with fat loss or muscle goals","Track workouts and implement one data-based adjustment while improving sleep habits"],"description":"In under an hour, you’ll set clear fitness targets, run simple baseline tests, and learn the training principles that drive real progress. You’ll build a beginner-friendly weekly strength plan, add cardio intelligently, set basic nutrition targets, and leave with a simple tracking + recovery system you can actually stick to.","created_at":"2026-01-13T08:38:51.591798+00:00","average_segment_quality":8.172857142857142,"pedagogical_soundness_score":8.3,"title":"Build Your First Balanced Fitness Plan","generation_time_seconds":325.9263186454773,"segments":[{"duration_seconds":312.40000000000003,"concepts_taught":["Fitness as ongoing lifestyle (no finish line)","Targets vs checkpoints (definitions and functions)","Outcome goals vs behavior-based goals","Using check-ins to evaluate alignment of actions and results","Examples of behaviors (steps, water, workouts, sleep schedule)","Full-time commitment vs part-time commitment","Keeping plans simple; embracing boredom/monotony as habit formation signal"],"quality_score":8.149999999999999,"before_you_start":"To get results, you need more than motivation—you need clarity about what you’re aiming for and what you’ll do daily to get there. In this segment you’ll set a target (the outcome you want), define checkpoints (when you’ll review progress), and choose behavior goals (the repeatable actions—like workouts, steps, and sleep—that actually drive change).","title":"Set Targets, Checkpoints, and Behaviors","url":"https://www.youtube.com/watch?v=ZONqM0C0Grc&t=328s","sequence_number":1.0,"prerequisites":["Basic familiarity with fitness goals (e.g., weight loss or strength goals)","Willingness to self-monitor behaviors over time"],"learning_outcomes":["Distinguish a target from a checkpoint and give an example of each","Convert an outcome goal into 3-5 concrete behavior-based goals","Explain why focusing only on outcomes can create discouragement despite correct behaviors","Identify a ‘simple’ habit plan and justify why simplicity supports consistency"],"video_duration_seconds":682.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"","overall_transition_score":10.0,"to_segment_id":"ZONqM0C0Grc_328_641","pedagogical_progression_score":10.0,"vocabulary_consistency_score":10.0,"knowledge_building_score":10.0,"transition_explanation":"N/A (first segment)"},"segment_id":"ZONqM0C0Grc_328_641","micro_concept_id":"fitness_goals_and_starting_assessment"},{"duration_seconds":435.91999999999996,"concepts_taught":["Push-up test protocol (1-minute reps, stop on form loss)","Push-up form standards (wrists under shoulders, elbows ~45°, core/glutes tight, depth target)","Plank test protocol (hold time, stop when form changes)","Plank form standards (elbows under shoulders, heels forward, avoid low-back arch)","Cardio test options: burpees (30s) vs jumping jacks (1 min) with modification guidance","Stopping rule for cardio tests (loss of form/pace)","Back extension hold protocol and safety stop rule","Squat test with chair/bench marker (1-minute reps, heel drive, tap not sit)","Recording scores as outcomes"],"quality_score":8.219999999999999,"before_you_start":"Now that you’ve chosen targets and the behaviors you’ll commit to, you need a starting point—otherwise you can’t tell if your plan is working. In this segment you’ll learn a small set of at-home tests (with clear form rules) so you can record reps and times safely, then reuse the same tests later as objective checkpoints.","title":"Run Simple At-Home Baseline Tests","url":"https://www.youtube.com/watch?v=Y_Cbnv1lgHM&t=190s","sequence_number":2.0,"prerequisites":["Ability to use a phone timer","Basic understanding of ‘reps’ and ‘good form’","Space to perform floor and standing movements"],"learning_outcomes":["Perform a 1-minute push-up test using consistent form and a clear stopping rule","Time a plank test and apply objective end criteria based on form changes","Select an appropriate cardio test (burpees or jumping jacks) based on tolerance and track performance","Execute a back extension hold with correct setup and a safety-based stop decision","Run a 1-minute squat test using a chair/bench marker and proper cues (heels, tap, consistent depth)"],"video_duration_seconds":683.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"ZONqM0C0Grc_328_641","overall_transition_score":8.8,"to_segment_id":"Y_Cbnv1lgHM_190_626","pedagogical_progression_score":8.5,"vocabulary_consistency_score":9.0,"knowledge_building_score":9.0,"transition_explanation":"Moves from choosing goals to choosing measurable baseline metrics you can retest at checkpoints."},"segment_id":"Y_Cbnv1lgHM_190_626","micro_concept_id":"fitness_goals_and_starting_assessment"},{"duration_seconds":280.06,"concepts_taught":["Definition of progressive overload","Adaptation and why progress stalls without new stimulus","Overload variables: weight (resistance), reps, sets","How rep ranges shift adaptation focus (strength vs endurance)","Training volume as a combined overload metric","Frequency as weekly exposure to drive volume","Training to failure: definition, pros/cons, recovery cost","Recovery as a requirement for adaptation and continued progress"],"quality_score":8.024999999999999,"before_you_start":"You’ve got goals and baseline numbers—next you need to understand what actually makes those numbers improve. This segment will show you what progressive overload really means, the main ways to apply it (weight, reps, sets), and why recovery is the non-negotiable partner that allows adaptation instead of burnout.","title":"Progressive Overload and Recovery Basics","url":"https://www.youtube.com/watch?v=HiJ1uLuTNxo&t=0s","sequence_number":3.0,"prerequisites":["Basic familiarity with resistance training exercises (e.g., squats)","Understanding that the body adapts to repeated stressors"],"learning_outcomes":["Define progressive overload and explain why it matters for continued progress","Identify and manipulate the main overload variables (weight, reps, sets)","Explain how rep ranges can bias adaptations toward strength or endurance","Describe training volume as the combination of sets, reps, and weight","Explain why frequency, failure training, and recovery affect progression"],"video_duration_seconds":323.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"Y_Cbnv1lgHM_190_626","overall_transition_score":8.7,"to_segment_id":"HiJ1uLuTNxo_0_280","pedagogical_progression_score":8.5,"vocabulary_consistency_score":8.5,"knowledge_building_score":9.0,"transition_explanation":"Uses the baseline tests as ‘current capacity’ and explains how training must gradually challenge that capacity to create change."},"segment_id":"HiJ1uLuTNxo_0_280","micro_concept_id":"fitness_components_and_training_principles"},{"duration_seconds":313.47,"concepts_taught":["How training variables diverge as lifters become advanced","Strength-oriented (powerlifting) programming features: high intensity (1–5 reps), longer rest (3–5 min), compound focus","Hypertrophy-oriented (bodybuilding) programming features: moderate loads, higher reps (often 8–15), shorter rest (60–90 sec), higher volume, more isolation work","Compound vs isolation exercise distinction","Why bigger muscles are generally stronger, but not perfectly proportional","Different primary adaptations: myofibrillar increases + nervous system motor unit recruitment for strength","Sarcoplasmic hypertrophy concept: increased fluid content contributing to size","Definition of sarcoplasm and uncertainty about mechanisms"],"quality_score":8.385,"before_you_start":"You now know you must progressively challenge your body, but ‘hard training’ can mean different things depending on the result you want. In this segment you’ll learn how strength-focused training and muscle-growth training differ in reps, rest, and exercise choices—so your plan matches your target instead of fighting it.","title":"Strength vs Muscle: Train for Outcomes","url":"https://www.youtube.com/watch?v=sxn5kPQ4Gl0&t=754s","sequence_number":4.0,"prerequisites":["Basic familiarity with resistance training terms (reps, sets, rest)","General understanding that muscles can grow larger with training"],"learning_outcomes":["Compare strength-focused vs hypertrophy-focused training using intensity, reps, rest, and exercise selection","Differentiate compound from isolation exercises with examples","Explain why strength improvements include neural adaptations beyond muscle size","Describe sarcoplasmic hypertrophy as a proposed mechanism for size without proportional strength"],"video_duration_seconds":1069.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"HiJ1uLuTNxo_0_280","overall_transition_score":8.4,"to_segment_id":"sxn5kPQ4Gl0_754_1067","pedagogical_progression_score":8.0,"vocabulary_consistency_score":8.5,"knowledge_building_score":8.5,"transition_explanation":"Builds directly on progressive overload by showing how overload is expressed differently across strength vs hypertrophy goals."},"segment_id":"sxn5kPQ4Gl0_754_1067","micro_concept_id":"fitness_components_and_training_principles"},{"duration_seconds":286.95,"concepts_taught":["Purpose of form corrections (injury prevention, better results)","Squat: common mistakes (knees buckling inward; weight forward; heels lifting; knees drifting past toes)","Squat: corrective cues (chest lifted; knees pressed out; weight in heels; knees stacked over ankles; drive through heels; glutes squeeze)","Lunge: common mistakes (weight forward; heel lifted; rolling into ball of foot)","Lunge: corrective cues (chest up; weight in front heel; upright posture; knee stays behind front toe)","Stiff-legged deadlift: common mistakes (rounded spine; shoulders hunched; uncontrolled lowering; lifting with back; over-arching; high gaze/neck strain)","Stiff-legged deadlift: corrective cues (knees not locked; neutral gaze/spine; shoulders back; core tight; hip hinge/booty back; weights close to legs; glute squeeze at top)","Bicep curl: common mistakes (swinging/momentum; over-arching; shoulders rolling forward; lack of control)","Bicep curl: corrective cues (pelvic tilt/brace core; elbows pinned; upright torso; full range; squeeze at top)","Overhead tricep extension: common mistakes (over-arching; chin tucked; elbows flared; shoulders hunching)","Overhead tricep extension: corrective cues (lift chin; tuck elbows; solid stance; pelvic tilt/brace; hinge at elbow; upper arm still; squeeze at top; shoulders down)"],"quality_score":7.994999999999999,"before_you_start":"Once you understand what you’re training for, technique becomes the fastest way to get better results with less pain. This segment will help you spot the most common lower-body form errors in squats, lunges, and hip-hinge deadlift patterns—and replace them with simple cues you can use immediately.","title":"Fix Squat, Lunge, and Hinge Form","url":"https://www.youtube.com/watch?v=dBJry3tcX0Q&t=0s","sequence_number":5.0,"prerequisites":["Basic familiarity with common gym movements (squat, lunge, deadlift, curls)","Understanding of body positioning cues (chest up, neutral spine, core engaged)"],"learning_outcomes":["Diagnose frequent squat and lunge errors and select a corrective cue to address them","Explain how shifting weight to heels and maintaining upright posture changes alignment cues in squats/lunges","Identify deadlift form faults (rounding, over-arching, high gaze) and apply neutral spine/hip hinge corrections","Perform bicep curls and overhead tricep extensions with reduced momentum and better joint positioning","Choose stabilization cues (pelvic tilt/core brace, elbows pinned/tucked) to improve upper-body exercise control"],"video_duration_seconds":462.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"sxn5kPQ4Gl0_754_1067","overall_transition_score":8.1,"to_segment_id":"dBJry3tcX0Q_0_286","pedagogical_progression_score":8.0,"vocabulary_consistency_score":8.5,"knowledge_building_score":8.0,"transition_explanation":"Transitions from choosing training emphasis (strength vs muscle) to executing foundational movement patterns safely."},"segment_id":"dBJry3tcX0Q_0_286","micro_concept_id":"fitness_strength_training_form_fundamentals"},{"duration_seconds":201.6,"concepts_taught":["RPE (rate of perceived exertion) definition in lifting","RIR (repetitions in reserve) definition","Mapping RPE to proximity-to-failure","Using half steps (e.g., 8.5) for uncertainty","Converting between RPE and RIR (RIR = 10 − RPE)","Auto-regulation in training (adjusting load to match target effort)","Why RPE/RIR estimation is harder for beginners"],"quality_score":8.075,"before_you_start":"Good form is step one; smart effort is step two. In this segment you’ll learn how to rate how hard a set really was using RPE and reps-in-reserve (RIR), and how to adjust weight so you train hard enough to improve without turning every workout into a risky max-out session.","title":"Use RPE and RIR Safely","url":"https://www.youtube.com/watch?v=bNVyQzr92NE&t=11s","sequence_number":6.0,"prerequisites":["Basic resistance training terms (set, rep, failure)","Familiarity with adjusting weights in the gym"],"learning_outcomes":["Define RPE and RIR in terms of reps left before failure","Convert between RPE and RIR using the 10-minus relationship","Use a target RPE/RIR to adjust training loads day-to-day","Explain why beginners may mis-estimate RPE/RIR compared to advanced lifters"],"video_duration_seconds":471.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"dBJry3tcX0Q_0_286","overall_transition_score":8.8,"to_segment_id":"bNVyQzr92NE_11_212","pedagogical_progression_score":8.5,"vocabulary_consistency_score":9.0,"knowledge_building_score":9.0,"transition_explanation":"Adds ‘how hard should this feel?’ on top of ‘how should this look?’ to complete safe technique + intensity control."},"segment_id":"bNVyQzr92NE_11_212","micro_concept_id":"fitness_strength_training_form_fundamentals"},{"duration_seconds":326.78000000000003,"concepts_taught":["Two-workout A/B program structure","Beginner emphasis on movement patterns","Why (mostly) avoid isolation work initially","Warm-up joints before lifting","Workout A: bench/incline/OHP/squat with sets and reps","Workout B: pull-up progression/row/deadlift/curl with sets and reps","Technique focus: record sets, avoid ego lifting","Progressive overload definition and weekly weight increases","Workout tracking to ensure overload"],"quality_score":8.14,"before_you_start":"With movement basics and effort control in place, you’re ready to organize training into a repeatable week. This segment will walk you through a simple A/B split built around core movement patterns, plus the key habits—warm-up, technique focus, and gradual progression—that make the plan work long enough to matter.","title":"Build a Beginner Two-Day A/B Plan","url":"https://www.youtube.com/watch?v=U9ENCvFf9yQ&t=155s","sequence_number":7.0,"prerequisites":["Basic familiarity with common gym exercises names (bench press, squat, deadlift)","Ability to follow a written plan and count sets/reps"],"learning_outcomes":["Outline a 4-day A/B split using the given exercise sequence and set/rep targets","Select a pull-up regression (assisted/negatives/pulldown) appropriate to current ability","Explain why beginners focus on compound basics and limit isolation work initially (with the biceps curl exception)","Define progressive overload and describe how tracking enables it","Describe two technique-learning habits: recording sets and prioritizing form over ego"],"video_duration_seconds":734.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"bNVyQzr92NE_11_212","overall_transition_score":8.5,"to_segment_id":"U9ENCvFf9yQ_155_482","pedagogical_progression_score":8.5,"vocabulary_consistency_score":8.5,"knowledge_building_score":8.5,"transition_explanation":"Uses RPE/RIR and movement form as the safety rails for following a structured weekly plan."},"segment_id":"U9ENCvFf9yQ_155_482","micro_concept_id":"fitness_workout_plan_sets_reps_split"},{"duration_seconds":104.96999999999997,"concepts_taught":["Zone 2 as aerobic zone framing","Nasal breathing method: rule and adjustments","Talk test method: conversational pace after warm-up","Pros/cons: simplicity vs imperfect accuracy","Walk breaks as a tool to control intensity"],"quality_score":8.16,"before_you_start":"Now that strength training has a weekly home, cardio becomes a tool you can add strategically instead of randomly. In this segment you’ll learn how to keep steady cardio in an appropriate “easy but effective” range using breathing and conversational pace—no heart-rate monitor required.","title":"Find Zone 2 With Talk Test","url":"https://www.youtube.com/watch?v=taO8kKsx448&t=263s","sequence_number":8.0,"prerequisites":["Basic sense of perceived exertion and breathing effort","Ability to self-monitor comfort while running"],"learning_outcomes":["Apply nasal breathing to regulate training intensity","Apply the talk test to maintain an aerobic effort","Explain why these methods are useful but not perfectly precise"],"video_duration_seconds":2173.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"U9ENCvFf9yQ_155_482","overall_transition_score":8.0,"to_segment_id":"taO8kKsx448_263_368","pedagogical_progression_score":8.0,"vocabulary_consistency_score":8.5,"knowledge_building_score":8.0,"transition_explanation":"Shifts from strength planning to cardio by introducing a simple intensity ‘cap’ that protects recovery."},"segment_id":"taO8kKsx448_263_368","micro_concept_id":"fitness_cardio_zones_intervals_steady"},{"duration_seconds":73.2,"concepts_taught":["HIIT definition (high-intensity interval training)","Work/rest (or active recovery) interval structure","Example protocols (30/30 sprints; 45/15 jumping jacks; Tabata 20/10)","Typical interval durations (10 seconds to 1 minute)","Typical total workout duration (4 to 20 minutes)","Exercise modality flexibility (sprints, kettlebell swings, squat jumps)","Rest interval options (rest, jogging, bouncing, passive recovery)"],"quality_score":8.12,"before_you_start":"You’ve got a steady cardio option you can control with breathing and talk pace. Next you’ll learn the other major cardio format—intervals. This segment will define HIIT and show how to build a session by choosing work time, rest time, and total duration so you can dose intensity intentionally.","title":"Understand HIIT: Work, Rest, Repeat","url":"https://www.youtube.com/watch?v=dNJ2gG-Jud4&t=0s","sequence_number":9.0,"prerequisites":["Basic understanding of cardio exercise (e.g., sprinting vs lower-effort cardio)","Comfort interpreting time intervals (seconds/minutes)"],"learning_outcomes":["Explain what makes a workout ‘HIIT’ in terms of work-rest structure","Create a basic HIIT plan by choosing work time, rest time, and total duration","Give at least two example HIIT protocols and when they might be used","Identify suitable exercises for HIIT work intervals and recovery intervals"],"video_duration_seconds":413.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"taO8kKsx448_263_368","overall_transition_score":8.6,"to_segment_id":"dNJ2gG-Jud4_0_73","pedagogical_progression_score":8.5,"vocabulary_consistency_score":9.0,"knowledge_building_score":8.5,"transition_explanation":"Builds on Zone 2 by contrasting it with interval training structure and vocabulary (work/rest)."},"segment_id":"dNJ2gG-Jud4_0_73","micro_concept_id":"fitness_cardio_zones_intervals_steady"},{"duration_seconds":182.95000000000005,"concepts_taught":["Same-session vs separate-session concurrent training","Evidence nuance for trained individuals (2021 meta-analysis)","Practical recommendation: separate sessions if possible","Order within same session: resistance before cardio","Cardio mode considerations (running vs cycling)","Muscle damage differences and moderation context","Repeated-bout effect (adaptation to damage)","Encouragement to experiment and personalize"],"quality_score":8.25,"before_you_start":"Now you can name and build both steady cardio and HIIT—but the big question is where they fit in your week. This segment will help you decide whether to combine cardio and lifting, when to separate them, and what order to do them in so your strength workouts stay high-quality.","title":"Schedule Cardio Without Killing Lifts","url":"https://www.youtube.com/watch?v=bjSWKtKlEh4&t=504s","sequence_number":10.0,"prerequisites":["Basic understanding of training fatigue and recovery","Familiarity with the idea of training ‘sessions’ and exercise order"],"learning_outcomes":["Decide when separate sessions may be preferable for strength-focused trained individuals","Choose exercise order in a combined session to protect lifting quality","Explain why running might be more damaging than cycling and when that matters","Describe the repeated-bout effect as adaptation to muscle damage over time"],"video_duration_seconds":763.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"dNJ2gG-Jud4_0_73","overall_transition_score":8.7,"to_segment_id":"bjSWKtKlEh4_504_687","pedagogical_progression_score":8.5,"vocabulary_consistency_score":8.5,"knowledge_building_score":9.0,"transition_explanation":"Uses the new HIIT vs steady options to make practical scheduling decisions that protect lifting performance."},"segment_id":"bjSWKtKlEh4_504_687","micro_concept_id":"fitness_cardio_zones_intervals_steady"},{"duration_seconds":213.76000000000002,"concepts_taught":["FSR vs FBR framework (fat building vs fat breakdown)","Energy expenditure contributors (metabolism, NEAT, exercise)","Role of sleep and stress in enabling fat loss","Calories as primary driver of lowering fat building","Practical fat-loss levers: move more, eat less, lift, eat protein"],"quality_score":8.33,"before_you_start":"Training is only half the story—your body composition responds to patterns of eating and movement over time. In this segment you’ll learn a clear model for how fat loss happens and which levers matter most (food intake, activity, lifting, and recovery) so your nutrition choices support your plan instead of fighting it.","title":"Fat Loss: Calories and Key Levers","url":"https://www.youtube.com/watch?v=slXxO2zJXUI&t=255s","sequence_number":11.0,"prerequisites":["Basic idea of calories in vs calories out","General familiarity with exercise types (cardio vs weights)"],"learning_outcomes":["Use the FSR/FBR idea to predict weight/fat change directionally","Differentiate NEAT from intentional exercise and give examples of each","Explain why calorie reduction can initiate fat loss even if macronutrient details vary","State a minimal practical fat-loss rule set that includes muscle retention strategies"],"video_duration_seconds":1581.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"bjSWKtKlEh4_504_687","overall_transition_score":8.2,"to_segment_id":"slXxO2zJXUI_255_469","pedagogical_progression_score":8.0,"vocabulary_consistency_score":8.0,"knowledge_building_score":8.0,"transition_explanation":"Bridges from cardio scheduling to the bigger energy-balance picture that ultimately governs fat loss and weight change."},"segment_id":"slXxO2zJXUI_255_469","micro_concept_id":"fitness_nutrition_basics_protein_calories_timing"},{"duration_seconds":247.999,"concepts_taught":["Protein as primary nutrition factor for muscle gain","Daily protein target (0.8 g/lb as minimum)","Adjusting protein targets for higher body fat (0.6–0.7 g/lb)","Using simple meal structure to hit targets","Protein powders as a practical aid","Protein distribution across the day (2 minimum, 3+ optimal)","Why macro ratios (carb:fat) are mostly preference if calories match"],"quality_score":8.295,"before_you_start":"Now that you understand the main fat-loss and body-composition levers, it’s time to make nutrition actionable instead of vague. This segment will help you estimate a realistic daily protein target, translate it into meals, and understand why hitting protein consistently matters more than obsessing over perfect carb/fat ratios.","title":"Set Your Daily Protein Target","url":"https://www.youtube.com/watch?v=6y-R3dNx4vA&t=145s","sequence_number":12.0,"prerequisites":["Basic concept of protein as a macronutrient","Basic understanding of body weight and grams","General familiarity with muscle recovery from training"],"learning_outcomes":["Estimate an appropriate daily protein target using body weight-based rules","Adjust protein targets downward when carrying more body fat (as described)","Plan meals to reliably meet protein goals using simple meal templates","Explain why distributing protein across multiple feedings may be more optimal than one large meal","Decide macronutrient ratios (carb vs fat) based on preference once protein is sufficient"],"video_duration_seconds":884.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"slXxO2zJXUI_255_469","overall_transition_score":8.6,"to_segment_id":"6y-R3dNx4vA_145_393","pedagogical_progression_score":8.5,"vocabulary_consistency_score":8.5,"knowledge_building_score":9.0,"transition_explanation":"Takes the ‘levers’ model and zooms into the highest-leverage nutrition variable for training outcomes: protein."},"segment_id":"6y-R3dNx4vA_145_393","micro_concept_id":"fitness_nutrition_basics_protein_calories_timing"},{"duration_seconds":407.601,"concepts_taught":["Workout volume variables (sets, reps, load, rest)","Definitions of sets and reps with example","Beginner recommendation for starting sets","Rep ranges tied to training goals (endurance, hypertrophy, strength/power)","Rest-time adjustments by rep range","Adjusting load based on goal and performance (too light vs appropriate)","Different loads for different body parts","Importance of proper form and quality reps","Progression to avoid plateaus","Progress slowly; rule-of-thumb 4–6 weeks before increasing difficulty","Ways to progress (load, volume, time, less rest, harder moves)","Tracking workouts with objective and subjective records","Using records to adjust programming and maintain accountability"],"quality_score":8.09,"before_you_start":"You now have the building blocks: a weekly strength plan, cardio options you can schedule, and nutrition targets that support your goal. This segment shows you how to run the system week after week—choosing sets, reps, rest, and weights intelligently, progressing without plateaus, and using a simple log to guide adjustments based on results and recovery.","title":"Track Workouts and Progress Gradually","url":"https://www.youtube.com/watch?v=5iHQDUvR_vc&t=361s","sequence_number":13.0,"prerequisites":["Basic familiarity with resistance training terms (or willingness to learn definitions)","Ability to self-monitor effort and follow a plan over weeks"],"learning_outcomes":["Define sets and reps and apply them when planning an exercise","Select rep ranges and rest times that match a specific goal (endurance vs hypertrophy vs strength/power)","Decide when weight is ‘too light’ relative to a goal-based rep target","Explain why progression prevents plateaus and why increasing difficulty too fast raises injury risk","List multiple progression strategies (load, volume, time, rest reduction, harder moves)","Design a simple workout-tracking template including objective and subjective fields"],"video_duration_seconds":788.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"6y-R3dNx4vA_145_393","overall_transition_score":8.7,"to_segment_id":"5iHQDUvR_vc_361_769","pedagogical_progression_score":8.5,"vocabulary_consistency_score":8.5,"knowledge_building_score":9.0,"transition_explanation":"Connects nutrition targets to training execution by showing how to monitor and progress workouts using objective records."},"segment_id":"5iHQDUvR_vc_361_769","micro_concept_id":"fitness_recovery_and_progress_tracking_habits"},{"duration_seconds":145.75000000000003,"concepts_taught":["Sleep-duration target: ~7–9 hours, active people toward high end","Naps can help total sleep when needed but are not an equal substitute for nighttime sleep","Sleep hygiene strategies to fall asleep faster and improve sleep quality","Behavioral rules: avoid electronics 30 minutes pre-bed; reserve bedroom for sleep/sex; keep consistent sleep-wake schedule","Caffeine timing: even 6 hours pre-bed can reduce total sleep time; 3 hours is worse","Practical implication for evening trainees: avoid high-caffeine pre-workout late","Core takeaway: prioritize enough hours asleep because it best supports gains"],"quality_score":8.185,"before_you_start":"Tracking tells you what’s happening—but recovery determines what you can adapt to. This final segment gives you a practical sleep target and a few high-impact habits (screens, routine, caffeine timing) so your training and nutrition efforts actually translate into better performance and body composition.","title":"Sleep Habits That Boost Recovery","url":"https://www.youtube.com/watch?v=fVbbUhRHlh8&t=150s","sequence_number":14.0,"prerequisites":["Basic understanding that sleep has quantity and quality dimensions","Everyday familiarity with caffeine sources (coffee, pre-workout)"],"learning_outcomes":["Choose a realistic nightly sleep target aligned with the recommended range","Differentiate between increasing total sleep via naps and optimizing nighttime sleep","Apply at least three sleep-hygiene behaviors to improve sleep onset and quality","Decide how to time caffeine intake to reduce sleep disruption, especially for evening workouts","Explain why prioritizing sufficient sleep hours is framed as the most important takeaway"],"video_duration_seconds":372.0,"transition_from_previous":{"suggested_bridging_content":"","from_segment_id":"5iHQDUvR_vc_361_769","overall_transition_score":9.0,"to_segment_id":"fVbbUhRHlh8_150_296","pedagogical_progression_score":9.0,"vocabulary_consistency_score":9.0,"knowledge_building_score":9.0,"transition_explanation":"Completes the progress loop: after learning how to train and track, you add the recovery behaviors that make progress possible."},"segment_id":"fVbbUhRHlh8_150_296","micro_concept_id":"fitness_recovery_and_progress_tracking_habits"}],"prerequisites":["Ability to use a phone timer and record notes (paper or app)","Comfort with basic exercise terms (rep, set) or willingness to learn","A safe space to do basic bodyweight movements (push-ups, planks, squats)","Willingness to start conservatively and prioritize form and recovery"],"micro_concepts":[{"prerequisites":[],"learning_outcomes":["Write a specific fitness goal (SMART-style) tied to a timeline","Choose 2–4 baseline metrics (e.g., push-ups, plank time, 1-mile time, bodyweight)","Identify constraints (schedule, equipment, injuries) that shape your plan"],"difficulty_level":"beginner","concept_id":"fitness_goals_and_starting_assessment","name":"Fitness goals and starting assessment","description":"Clarify what “fitness” means for you (strength, muscle, endurance, health) and run a quick baseline check so you can choose the right plan and measure progress.","sequence_order":0.0},{"prerequisites":["fitness_goals_and_starting_assessment"],"learning_outcomes":["Explain progressive overload and how it applies to weights, reps, or time","Differentiate strength vs muscle growth vs endurance training goals","Describe why recovery and consistency matter as much as workouts"],"difficulty_level":"beginner","concept_id":"fitness_components_and_training_principles","name":"Fitness components and training principles","description":"Learn the main components of fitness (strength, hypertrophy, endurance, mobility) and the training principles that drive results: overload, specificity, recovery, and consistency.","sequence_order":1.0},{"prerequisites":["fitness_components_and_training_principles"],"learning_outcomes":["Identify the five key movement patterns and what they train","Demonstrate basic bracing and neutral spine concepts","Use RPE (effort rating) or “reps in reserve” to choose training intensity safely"],"difficulty_level":"intermediate","concept_id":"fitness_strength_training_form_fundamentals","name":"Fitness strength training form fundamentals","description":"Build safe, effective technique using core movement patterns (squat/hinge/push/pull/brace) and learn how to select loads and reps without ego-lifting.","sequence_order":2.0},{"prerequisites":["fitness_strength_training_form_fundamentals"],"learning_outcomes":["Build a 2–4 day/week strength plan using movement patterns","Select beginner-appropriate set/rep ranges (e.g., 3×5–8 or 3×8–12)","Plan rest times and warm-ups that match the workout goal"],"difficulty_level":"intermediate","concept_id":"fitness_workout_plan_sets_reps_split","name":"Fitness workout plan sets reps split","description":"Turn goals and principles into a simple weekly plan: choose exercises, sets, reps, rest times, and a realistic schedule (full-body or upper/lower).","sequence_order":3.0},{"prerequisites":["fitness_workout_plan_sets_reps_split","fitness_components_and_training_principles"],"learning_outcomes":["Explain the difference between steady-state cardio and intervals","Estimate an appropriate intensity using talk test or heart-rate zones","Add 1–3 cardio sessions to a week without sabotaging recovery"],"difficulty_level":"beginner","concept_id":"fitness_cardio_zones_intervals_steady","name":"Fitness cardio zones intervals steady","description":"Learn how to improve cardio fitness using steady-state and interval training, and how to set intensity using heart rate zones or talk test.","sequence_order":4.0},{"prerequisites":["fitness_strength_training_form_fundamentals"],"learning_outcomes":["Differentiate mobility, flexibility, and stability with examples","Do a 5–10 minute mobility routine targeting hips, ankles, shoulders","Apply simple injury-prevention habits (gradual load increases, technique checks)"],"difficulty_level":"beginner","concept_id":"fitness_mobility_and_injury_prevention_basics","name":"Fitness mobility and injury prevention basics","description":"Use short mobility work, basic flexibility, and smart load management to reduce aches and keep training consistent (the biggest “injury prevention” factor).","sequence_order":5.0},{"prerequisites":["fitness_goals_and_starting_assessment","fitness_components_and_training_principles"],"learning_outcomes":["Explain calorie deficit vs surplus in relation to fat loss or muscle gain","Estimate a daily protein target and list high-protein food options","Choose 2–3 nutrition habits that match your goal and schedule"],"difficulty_level":"beginner","concept_id":"fitness_nutrition_basics_protein_calories_timing","name":"Fitness nutrition basics protein calories timing","description":"Cover the basics that drive most fitness outcomes: energy balance (calories), protein targets, fiber/whole foods, hydration, and simple meal timing.","sequence_order":6.0},{"prerequisites":["fitness_workout_plan_sets_reps_split","fitness_nutrition_basics_protein_calories_timing"],"learning_outcomes":["List key recovery levers (sleep, stress, rest days, deloads) and why they matter","Track workouts using a simple log (exercise, sets, reps, load, RPE)","Make one data-based adjustment (increase load, add reps, change cardio dose)"],"difficulty_level":"intermediate","concept_id":"fitness_recovery_and_progress_tracking_habits","name":"Fitness recovery and progress tracking habits","description":"Learn how sleep, stress, and recovery influence performance, and set up a simple tracking system (workouts, steps, bodyweight, photos) to guide adjustments.","sequence_order":7.0}],"selection_strategy":"Select one high-quality, self-contained segment per distinct learning outcome, aligned to the requested micro-concept sequence, and keep total runtime under 60 minutes. Start with goal/assessment (low cognitive load), then introduce core training principles, then technique + effort regulation, then a simple weekly strength plan, then cardio (zones + intervals + scheduling), then nutrition foundations, and finish with tracking + sleep habits. Enforce strict anti-redundancy by choosing only one segment when multiple cover the same primary outcome (e.g., reps/sets segments; multiple deload segments).","updated_at":"2026-03-05T08:39:19.593864+00:00","generated_at":"2026-01-13T08:38:00Z","overall_coherence_score":8.5,"interleaved_practice":[{"difficulty":"mastery","correct_option_index":3.0,"question":"You’ve been running your A/B plan for 3 weeks. On Workout A, your squat is stuck at 3×8 with the same weight, and your log shows your form stays solid and you finish each set with about 2 reps left in the tank. You want progress without creating a recovery problem. What is the best next adjustment?","option_explanations":["Incorrect: extra cardio may add fatigue and doesn’t directly overload the squat pattern; timing it before leg day is especially likely to hurt performance.","Incorrect: shorter rest can make the set feel harder, but it often reduces rep quality and total load lifted—more fatigue isn’t the same as better progressive overload for strength.","Incorrect: piling on sets is a high-fatigue solution and commonly creates recovery issues before it creates better stimulus for a beginner.","Correct! A small load increase with controlled effort is a clean overload lever you can log and repeat, letting reps temporarily dip and then rebuild."],"options":["Add two extra Zone 2 sessions before leg day to improve ‘work capacity’ so the squat feels easier","Keep the same weight but cut rest times in half to make the sets harder and force adaptation","Add 4–6 extra squat sets in the same workout to break the plateau immediately","Increase the load slightly and let reps drop toward the low end, then build reps back up over sessions"],"question_id":"mxq_01_overload_choice","related_micro_concepts":["fitness_components_and_training_principles","fitness_strength_training_form_fundamentals","fitness_workout_plan_sets_reps_split","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"Increasing stimulus with a small load jump (while keeping form and a sensible effort target) is the most direct application of progressive overload and is easiest to track. Cutting rest can increase fatigue and reduce rep quality, which may shift the training effect away from the goal. Adding cardio before leg day can interfere with performance via fatigue, especially if placed poorly. Adding many sets is more likely to create “junk volume” and recovery debt than to create higher-quality overload for a beginner."},{"difficulty":"mastery","correct_option_index":1.0,"question":"You can only train one hour today and want to do both lifting and cardio. Your main goal is strength progress on your main lifts. Which schedule best matches the course guidance?","option_explanations":["Incorrect: HIIT is the most fatiguing cardio choice and is most likely to reduce strength performance if done first.","Correct! When combining in one session, doing resistance training first best protects strength and technique quality, with cardio afterward.","Incorrect: Zone 2 is easier than HIIT, but it can still reduce lifting quality when done first—especially on hard lower-body days.","Incorrect: mixing intervals into rest periods changes the session into a fatigue-management problem and undermines the purpose of rest for strength."],"options":["Do HIIT first to ‘prime’ the nervous system, then lift heavy while you’re warm","Lift first, then do cardio afterward if you have time and energy","Do steady Zone 2 first because it’s easy, then lift after as long as you still have time","Alternate cardio intervals between your lifting sets as active recovery"],"question_id":"mxq_02_concurrent_order","related_micro_concepts":["fitness_cardio_zones_intervals_steady","fitness_components_and_training_principles","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"When strength is the priority and sessions must be combined, you protect lifting quality by lifting first and putting cardio after. HIIT first is most likely to impair heavy lifting via fatigue. Zone 2 first can still reduce performance if it meaningfully taxes you. Alternating intervals between sets adds extra fatigue and disrupts the rest intervals needed for high-quality strength work."},{"difficulty":"mastery","correct_option_index":2.0,"question":"During dumbbell lunges you stop a set at 10 reps because you’re confident you could only do 2 more reps with good form. What RPE best matches that set?","option_explanations":["Incorrect: RPE 9 implies about 1 rep in reserve—closer to failure than described.","Incorrect: RPE 8.5 implies you’re between 1–2 reps in reserve, but the scenario specifies about 2 reps left clearly.","Correct! About 2 reps in reserve maps to roughly RPE 8.","Incorrect: RPE 7 typically implies about 3 reps in reserve—too easy compared with the scenario."],"options":["RPE 9","RPE 8.5","RPE 8","RPE 7"],"question_id":"mxq_03_rpe_rir_mapping","related_micro_concepts":["fitness_strength_training_form_fundamentals","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"RIR and RPE are two lenses on the same idea: proximity to failure. If you had ~2 reps in reserve, that corresponds to about RPE 8 (since RIR ≈ 10 − RPE). The other options represent being farther from failure (RPE 7), being uncertain/closer (RPE 8.5), or being only ~1 rep away (RPE 9)."},{"difficulty":"mastery","correct_option_index":1.0,"question":"You’re 180 lb, lifting 3×/week on the A/B plan, and you want fat loss while keeping strength. You’re busy and need a plan you can sustain for 8–12 weeks. Which strategy best fits the course’s nutrition + training logic?","option_explanations":["Incorrect: fat loss isn’t created by eliminating one macro at maintenance, and avoiding lifting undermines muscle/strength retention.","Correct! A moderate deficit + progressive lifting + a clear protein target matches the course’s highest-leverage, sustainable approach.","Incorrect: aggressive deficits plus low protein typically worsen recovery and training quality, increasing the chance of losing muscle while dieting.","Incorrect: sweat and HIIT effort don’t guarantee a consistent deficit; this also risks recovery problems."],"options":["Stay at maintenance calories but remove all dietary fat; rely on Zone 2 only and avoid lifting to prevent soreness","Cut calories moderately below maintenance, keep lifting with progressive overload, and aim for roughly 0.8 g/lb protein daily","Slash calories aggressively and lower protein to reduce hunger; add more cardio to compensate for weaker lifting","Run daily HIIT and keep calories ‘intuitive’; focus on sweating more to accelerate fat loss"],"question_id":"mxq_04_nutrition_package","related_micro_concepts":["fitness_nutrition_basics_protein_calories_timing","fitness_workout_plan_sets_reps_split","fitness_cardio_zones_intervals_steady","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"Fat loss requires a consistent calorie deficit, and lifting helps preserve strength and muscle while dieting. A solid protein target supports recovery and muscle retention. Relying on sweat/HIIT without managing calories confuses effort with the real lever. Avoiding lifting removes a key muscle-retention tool. Aggressive restriction with low protein increases the risk of poor recovery, weaker training, and muscle loss."},{"difficulty":"mastery","correct_option_index":3.0,"question":"During bodyweight squats, your knees cave inward and your heels keep popping up, especially as you get tired. Which correction best matches the course’s form guidance?","option_explanations":["Incorrect: shifting forward commonly worsens heel lift and knee collapse, even if it feels like it helps depth.","Incorrect: bouncing trades control for momentum and can increase joint stress while masking the underlying technique issue.","Incorrect: bracing matters, but it doesn’t replace proper knee tracking and foot pressure—completing reps with bad alignment isn’t the goal.","Correct! This addresses both knee tracking and foot stability, which are the key faults causing valgus and heel lift under fatigue."],"options":["Lift your chest aggressively and let your weight shift forward so you can hit depth easier","Turn the movement into a fast bounce out of the bottom to use momentum and reduce fatigue","Hold your breath and push your belly forward hard; ignore knee tracking as long as reps are completed","Drive your knees out while keeping pressure through a stable foot (think whole-foot/tripod), and keep your torso braced"],"question_id":"mxq_05_form_cue_choice","related_micro_concepts":["fitness_strength_training_form_fundamentals","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"The problem combines alignment (knee valgus) and balance/foot pressure (heels lifting). The best fix is a cue that restores stable foot contact and knee tracking—so the hips/knees stack safely and the targeted muscles get loaded. The other options either reinforce the fault (forward shift), add risk (bouncing), or fix the wrong variable (bracing without knee/foot control)."},{"difficulty":"mastery","correct_option_index":1.0,"question":"You’re setting up your first 8-week training block. You want a simple way to know if your plan is working without obsessing daily. Which baseline + retest setup best matches the course approach?","option_explanations":["Incorrect: inconsistent timing and post-workout conditions distort measurements, making changes hard to interpret.","Correct! A small, repeatable test battery at consistent checkpoints creates useful signal with manageable effort and low measurement noise.","Incorrect: too many tests increases complexity and doesn’t improve decision-making; it also makes consistency hard.","Incorrect: daily retesting and weekly program changes overreact to normal variability and undermine consistency."],"options":["Pick circumference and performance tests, but take them immediately after hard workouts at random times to ‘see the pump’","Pick 2–4 repeatable tests (e.g., push-ups, plank, a simple cardio test, bodyweight) and retest at a consistent checkpoint using the same rules","Pick 10+ tests across every exercise you know, test once, then avoid retesting so you don’t ‘fail’","Pick only scale weight and retest every morning; change the program weekly based on day-to-day fluctuations"],"question_id":"mxq_06_baseline_and_checkpoint_design","related_micro_concepts":["fitness_goals_and_starting_assessment","fitness_recovery_and_progress_tracking_habits"],"discrimination_explanation":"A small set of standardized tests at planned checkpoints supports clear feedback with low noise. Too many tests increases fatigue, time cost, and confusion. Daily scale-driven decisions are vulnerable to normal fluctuations and can cause constant plan-switching. Random timing (post-workout, inconsistent conditions) adds measurement error and makes comparisons unreliable."}],"target_difficulty":"beginner","course_id":"course_1768203116","image_description":"Modern, premium fitness course thumbnail in a clean Apple-style layout. Center focal object: a semi-realistic, 3D-rendered kettlebell and a minimalist stopwatch overlapping slightly, suggesting “training + tracking.” The kettlebell is matte charcoal with subtle texture and a soft highlight; the stopwatch is glossy white with a clear digital face. Behind them, a simple line-graph progress curve rises from left to right in a thin accent stroke, implying measurable improvement. Background: smooth gradient from deep navy (#0B1F3A) at the edges to a lighter blue-gray (#2C4A66) near center, with a faint grid pattern barely visible to evoke planning without clutter. Use only one accent color (electric green #34C759) for the progress line and a small ring around the stopwatch button. Soft shadows and slight depth-of-field blur give dimension. Leave clean negative space in the upper third for the title text, ensuring strong contrast and readability.","tradeoffs":[],"image_url":"https://course-builder-course-thumbnails.s3.us-east-1.amazonaws.com/courses/course_1768203116/thumbnail.png","generation_progress":100.0,"all_concepts_covered":["Targets vs checkpoints vs behavior goals","At-home baseline fitness testing (strength, core, cardio)","Progressive overload using reps, sets, and load","Recovery as a requirement for adaptation","Strength training vs muscle-building differences (reps, rest, focus)","Lower-body technique basics (squat, lunge, hip hinge)","Using RPE/RIR to choose safe training effort","Beginner A/B weekly strength program structure","Zone 2 cardio using talk test and nasal breathing","HIIT interval structure (work/rest and session length)","Scheduling cardio with lifting to protect strength gains","Calories/energy balance as the main fat-loss driver","Daily protein targets and practical meal structure","Workout logging, gradual progression, and avoiding plateaus","Sleep quantity and sleep hygiene for recovery"],"created_by":"Shaunak Ghosh","generation_error":null,"rejected_segments_rationale":"Skipped the full trainer assessment workflow (42fVGpylH2Y_47_633) because it is trainer-centric, longer, and adds measurement complexity beyond a 60-minute beginner course. Avoided redundant reps/sets/progression segments (Iq36xGqIjhQ_114_444, Qf7-ZN8qiW0_0_502) because 5iHQDUvR_vc_361_769 covers the same primary outcomes plus tracking. Omitted detailed squat-only barbell technique segments (gcNh17Ckjgg_0_370, bEv6CCg2BC8_147_581, my0tLDaWyDU_7_420) to prevent over-specialization and cognitive overload for general “fitness.” Omitted deload-focused segments (LT_aBQatj5s_119_409, Yxx-j3J7N6c_64_415, Yxx-j3J7N6c_400_572, vLUlwnB55eU_0_227) because they are more intermediate and would crowd out core beginner planning/consistency. Could not directly cover the mobility/injury-prevention micro-concept due to lack of a true mobility routine/differentiation segment in the available set.","considerations":["Mobility/flexibility/stability and a 5–10 minute mobility routine were not directly covered due to missing matching segments; consider adding a dedicated mobility module later.","If you have pain, injury history, or medical conditions, consider professional guidance before testing or progressing loads."],"assembly_rationale":"This course follows a build-measure-train-adjust arc. First, learners define targets and behaviors, then establish baseline metrics to make progress observable. Next, they learn the minimal training science required to avoid common pitfalls (no overload, mismatched goal training, poor recovery). Technique and effort regulation come before programming so the plan is safe and repeatable. Cardio is taught as two clearly distinguishable tools (Zone 2 vs HIIT) plus scheduling rules to protect strength. Nutrition is simplified to the dominant drivers (calories and protein). Finally, the course ends with tracking and sleep so learners can sustain progress and self-correct over time.","user_id":"google_109800265000582445084","strengths":["Stays under 60 minutes while covering the full plan→execution→tracking loop","Strict anti-redundancy: each segment adds a new capability rather than repeating definitions","Balanced theory + practice: planning frameworks, testing protocols, technique cues, and real scheduling rules","Ends with systems (logging + sleep habits) that improve adherence and long-term outcomes"],"key_decisions":["Segment 1 [ZONqM0C0Grc_328_641]: Chosen as the simplest on-ramp to define targets, checkpoints, and behavior goals before any training details.","Segment 2 [Y_Cbnv1lgHM_190_626]: Adds concrete baseline metrics with clear protocols so goals become measurable and trackable.","Segment 3 [HiJ1uLuTNxo_0_280]: Introduces progressive overload plus recovery as the core mechanism that explains why programs must change over time.","Segment 4 [sxn5kPQ4Gl0_754_1067]: Builds on overload by clarifying how strength vs muscle growth differ, preventing mismatched expectations when writing plans.","Segment 5 [dBJry3tcX0Q_0_286]: Provides foundational lower-body technique corrections (squat/hinge/lunge) to reduce injury risk and improve stimulus.","Segment 6 [bNVyQzr92NE_11_212]: Adds RPE/RIR so learners can choose safe training loads without ego-lifting and apply auto-regulation.","Segment 7 [U9ENCvFf9yQ_155_482]: Converts principles into a simple beginner A/B weekly structure with exercises and sets/reps.","Segment 8 [taO8kKsx448_263_368]: Introduces Zone 2 using talk test/nasal breathing as an easy intensity tool before discussing intervals or scheduling.","Segment 9 [dNJ2gG-Jud4_0_73]: Defines HIIT with work/rest variables so learners can clearly discriminate intervals from steady cardio.","Segment 10 [bjSWKtKlEh4_504_687]: Adds the practical rule-set for combining cardio with lifting without undermining strength progress.","Segment 11 [slXxO2zJXUI_255_469]: Establishes calorie balance and the main fat-loss levers so nutrition decisions have a clear “why.”","Segment 12 [6y-R3dNx4vA_145_393]: Adds precise protein targets and simple meal structure to operationalize nutrition for muscle retention/gain.","Segment 13 [5iHQDUvR_vc_361_769]: Teaches how to select sets/reps/rest, progress gradually, and log workouts—the core tracking system for adjustments.","Segment 14 [fVbbUhRHlh8_150_296]: Ends with a short, actionable sleep hygiene toolkit to support recovery and consistency beyond the gym."],"estimated_total_duration_minutes":58.0,"is_public":true,"generation_status":"completed","generation_step":"completed"}}