What does body recomposition mean?

Body recomposition means changing what your body is made of — losing fat and building muscle at the same time — rather than simply losing or gaining weight. Because the two changes offset each other on the scale, your weight can stay almost identical while your body visibly changes shape. It is often shortened to "recomp" in the fitness world, and it is the alternative to running separate cutting and bulking phases.

Can you really lose fat and gain muscle at the same time?

Yes, it's scientifically documented (Barakat 2020[1], Slater 2019[2]). The phenomenon is called body recomposition. It works well in beginners, people returning to training, and people with a high body fat %. In lean and advanced athletes, it becomes marginal and classic cut/bulk cycles produce better results.

How long until you see results from recomposition?

First visible signs (photos, measurements) appear at 8-12 weeks. At 6 months, changes are clear. At 12 months, transformation can be spectacular in a beginner (3-5 kg of muscle gained, 4-6 kg of fat lost, with body weight nearly stable). Recomposition is slow — that's its main limitation.

How much protein for body recomposition?

2.2 to 2.6 g per kg of body weight per day, or 155-180 g for a 70 kg person. That's more than on a classic cut (1.8-2.2) because you need to fuel muscle synthesis despite the slight energy deficit[3][5]. Spread it across 4-5 doses of 30-45 g, 3-4 hours apart: it is the total intake across the day and how it is spread out that count, far more than the exact timing of the dose around your session[6].

Body recomposition or bulking: which to choose?

Recomposition if: beginner, returning after break, high body fat %, aesthetic goal without urgency. Classic bulking if: intermediate/advanced, already lean (< 15 % M, < 22 % W), looking for clean and rapid muscle gain. For most experienced lifters, the cut/bulk alternation produces better results over 12 months.

What caloric deficit for body recomposition?

Very light: 100 to 200 kcal/day below maintenance, or about 5-10 % of TDEE. Beyond that, you switch into classic cutting mode and muscle synthesis becomes compromised. Many lifters on recomposition even run strict maintenance with calorie cycling (light deficit on rest days, maintenance on training days).

Do you need cardio during recomposition?

Moderate cardio yes, excessive cardio no. Daily walking (8,000-10,000 steps) raises calorie expenditure without hindering muscle synthesis. Intense cardio sessions should stay limited: 1-2 LISS sessions of 30 min/week max. Beyond that, cardio can interfere with recovery and muscle synthesis (concurrent training effect).

How many resistance training sessions per week?

3-4 sessions per week, focused on compound lifts (squat, deadlift, bench press, pull-ups, leg press). 8-12 reps per set, with progressive overload (loads climbing over 4-8 weeks). Below 3 sessions, the stimulus is insufficient for muscle synthesis in the presence of a light deficit.

Is body recomposition possible in women?

Yes, and it's particularly interesting. Women who are beginners or returning after a break can see excellent results: 2-4 kg of muscle gained, 3-5 kg of fat lost over 6-12 months, at stable body weight. The fear of « becoming too muscular » is unfounded — muscle gain is physiologically slow. Protein at 2.2-2.4 g/kg, lifting 3-4×/week, light deficit of 100-150 kcal/day.

How to measure progress when the scale doesn't move?

Four combined indicators: (1) monthly photos under the same conditions (the most telling), (2) targeted measurements (waist, arm, thigh) every 2 weeks, (3) gym loads progressing (log your sessions), (4) body fat % via smart scale (bioelectrical impedance, for trend tracking) or DEXA scan (gold standard). Never rely on the scale alone during recomposition.

Does body recomposition also work in seniors?

Yes, with adjustments. People aged 60+ benefit particularly from a recomposition protocol to fight sarcopenia (age-related muscle loss). Protein bumped to 2.4-2.8 g/kg, lifting 3×/week focused on legs and back, very light deficit or strict maintenance. Results are slower than at 30 but real and significant for health.

Daily intake

2,603kcal/day

See details

CalculatorScientific sources

Body Recomposition Calculator

Q: What caloric deficit for body recomposition?

Very light: 100 to 200 kcal/day below maintenance, or about 5-10 % of TDEE. Beyond that, you switch into classic cutting mode and muscle synthesis becomes compromised. Many lifters on recomposition even run strict maintenance with calorie cycling (light deficit on rest days, maintenance on training days).

Q: Do you need cardio during recomposition?

Moderate cardio yes, excessive cardio no. Daily walking (8,000-10,000 steps) raises calorie expenditure without hindering muscle synthesis. Intense cardio sessions should stay limited: 1-2 LISS sessions of 30 min/week max. Beyond that, cardio can interfere with recovery and muscle synthesis (concurrent training effect).

Q: How many resistance training sessions per week?

3-4 sessions per week, focused on compound lifts (squat, deadlift, bench press, pull-ups, leg press). 8-12 reps per set, with progressive overload (loads climbing over 4-8 weeks). Below 3 sessions, the stimulus is insufficient for muscle synthesis in the presence of a light deficit.

Q: Is body recomposition possible in women?

Yes, and it's particularly interesting. Women who are beginners or returning after a break can see excellent results: 2-4 kg of muscle gained, 3-5 kg of fat lost over 6-12 months, at stable body weight. The fear of « becoming too muscular » is unfounded — muscle gain is physiologically slow. Protein at 2.2-2.4 g/kg, lifting 3-4×/week, light deficit of 100-150 kcal/day.

Q: How to measure progress when the scale doesn't move?

Four combined indicators: (1) monthly photos under the same conditions (the most telling), (2) targeted measurements (waist, arm, thigh) every 2 weeks, (3) gym loads progressing (log your sessions), (4) body fat % via smart scale (bioelectrical impedance, for trend tracking) or DEXA scan (gold standard). Never rely on the scale alone during recomposition.

Build muscle and lose fat at the same time: your calories, your protein, and how fast that is realistic.

By Adrien Grusse

Published September 13, 2026 · Updated September 13, 2026

Sex

Age

years

Height

Weight

Body fat

Activity level

Training experience

Enter your body fat to find out whether recomposition is realistic for you. Without it there is no honest answer — and a default verdict would mislead you.

Daily intake

2,603kcal/day

137 kcal below your maintenance of 2,740 kcal

Protein

160g/day

Based on your body weight, since body fat was not provided.

How fast

Muscle gained: 0.20 – 0.40 kg/month
Fat lost: 0.10 – 0.12 kg/week

Ranges, not promises: these come from the literature and depend on your sleep, your consistency and your genetics.

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Recomposition lives or dies on hitting protein consistently. Micron counts it for you, alongside 29 micronutrients.

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Frequently asked questions

Track your calories from a photo.

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Scientific sources