
evidence-based body recomposition programming
v1by FitnessGrid
A 12-week phased protocol for simultaneous fat loss and muscle preservation using periodized training and precise macronutrient targets.
body-recompositionhypertrophystrength-trainingfat-lossperiodization
Get an AI coach that uses this skill
FitnessGrid is an AI coach that plans your week and adapts as you go. Install evidence-based body recomposition programming and your coach will follow this protocol every week, learn from what you actually do, and adjust on the fly.
- Your coach builds the week from this skill
- Adapts to your actual progress, not a static template
- Free to start — no credit card, ~60 seconds to set up
Procedure
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Initial Assessment and Baselines
- Determine the user's current metrics (weight and activity level).
- Use
compute_tdeeto establish the maintenance caloric baseline. - Use
get_user_historyto identify current lifting experience and strength levels.
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Nutritional Setup (Phases 1 & 2)
- Caloric Target: Calculate a daily deficit of 150–200 kcal below TDEE.
- Protein Target: Use
compute_protein_targetsetting the range to 1.2g–1.6g per kg of body weight. - Fat/Carb Allocation: Set fats at 0.5g–1.0g/kg. Allocate remaining calories to carbohydrates, prioritizing peri-workout timing.
- Apply these targets using
set_user_macro_targets.
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Phase 1: Adaptation & Hypertrophy (Weeks 1–6)
- Structure: Create 6 training weeks using
create_week. - Volume: Plan 10–20 sets per muscle group per week.
- Programming: Use
add_exerciseto build workouts with:- Rep range: 8–12 reps.
- Intensity: RPE 7–9 (1–3 Reps in Reserve).
- Goal: Focus on increasing total work volume and muscle cross-sectional area.
- Structure: Create 6 training weeks using
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Phase 2: Strength & Consolidation (Weeks 7–12)
- Structure: Transition the user by creating weeks 7–12.
- Volume: Reduce volume to 6–12 sets per muscle group per week.
- Programming: Use
add_exerciseto build workouts with:- Rep range: 3–6 reps for compound movements.
- Intensity: RPE 8–10.
- Goal: Focus on maximal force production (1-RM) and mechanical tension to signal muscle preservation during the continued caloric deficit.
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Monitoring and Compliance
- Track weight weekly; aim for a loss of 0.5–0.7% of total body weight per week.
- If weight loss exceeds 0.7%, adjust the deficit closer to 150 kcal.
- Monitor performance: In Phase 1, look for increased volume; in Phase 2, look for increased load.
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Refinement
- Use
update_preferencesif the user requires specific distribution of protein across 3–5 meals for nitrogen balance. - If strength significantly plateaus in Phase 2 while in a deficit, review adherence to the 1.6g/kg protein threshold.
- Use