Body Recomposition: Losing Fat and Building Muscle Simultaneously

Body recomposition ("recomp") is the process of losing fat mass while gaining lean muscle mass concurrently. It is most achievable for:

• Novices or detrained individuals ("newbie gains").
• Those with higher body fat percentages (>25% men, >35% women).
• Individuals returning from a layoff (muscle memory).
• Those using anabolic pharmacologic agents.

The Five Pillars of Successful Recomp

1. Moderate caloric deficit: 200–500 kcal/day below maintenance—large deficits impair anabolic signaling.
2. High protein intake: 1.6–2.4 g/kg/day (0.7–1.1 g/lb), evenly distributed across 3–5 meals to maximize muscle protein synthesis.
3. Progressive resistance training: Compound lifts, 3–5 sessions/week, 6–12 rep range, RPE 7–9 (near failure).
4. Sleep & recovery: 7–9 hours; optimizes cortisol, growth hormone, and testosterone.
5. Patience: Slow progress (0.25–0.5% body weight change per week in each direction). Track via DEXA, waist circumference, strength metrics, photos.

Evidence-Based Adjuncts

• Creatine monohydrate 5 g/day.
• HIIT 1–2×/week (optional; prioritize lifting).
• Omega-3 and vitamin D if deficient.

Not optimal for advanced, lean athletes—distinct bulk/cut cycles are more efficient at that stage.