Body Recomposition: Lose Fat and Build Muscle at Once

Body recomposition means losing fat and building muscle at the same time. Your waist shrinks and your lifts go up, while the scale may hardly move. It's possible, and your chances are best if you are new to lifting, back after a break, or carrying more body fat. Lift three times a week, keep adding reps or weight, eat at least 1.6 g of protein per kg of body weight, and keep calories slightly under maintenance or right at it.

It's slow. Give it 8–12 weeks and go by your waist and your lifts, since your weight alone won't tell you much. Further down: your odds by starting point, eating targets, a three-day plan, and what your numbers mean.

Can you lose fat and build muscle at the same time?

Yes, though how fast depends a lot on where you start. Two studies show the range. Longland and colleagues put 40 young men on a harsh 40% calorie cut for four weeks, with hard training six days a week. The group eating 2.4 g/kg of protein gained about 1.2 kg of lean mass and lost 4.8 kg of fat. The group on 1.2 g/kg gained about 0.1 kg and lost 3.5 kg (Longland et al., 2016). Nobody should copy that diet, but it shows the two can happen together.

The second study looked at elite athletes, who are about as hard a group as you can pick. Those losing roughly 0.7% of body weight a week gained 2.1% lean mass over about 8.5 weeks. Those aiming for 1.4% a week lost a similar share of weight and saw no lean gain (Garthe et al., 2011). It was a small trial of 24 people, so read it as a direction and not a rule: slower seems to protect the muscle side.

Keep in mind that lean mass isn't the same as muscle: it includes water and stored carbohydrate. That's another reason to watch your lifts.

How realistic a recomp is, by starting point
Your starting point	Odds	Where to begin
New to lifting	Good	Learn the plan below and eat near maintenance with plenty of protein. Training is the new signal, so don't diet hard.
Back after a long break	Good	Start lighter than your old numbers. Regaining strength usually goes faster than building it the first time. See returning to the gym.
Higher body fat	Good	A moderate deficit fits here, but keep it under about 500 kcal a day.
Lean, with years of training	Slow	Changes are small and easy to miss. A dedicated muscle-building phase or a short fat-loss phase will often give clearer results.

How much to eat for body recomposition

There are three numbers to set: calories, protein and the rate of change on the scale. The first and third keep you from cutting too hard, which is the most common way a recomp fails.

Calories: start 200–300 kcal below your maintenance level, or at maintenance if you are a beginner. This range is a practical rule of thumb and not a tested prescription. The harder limit comes from a meta-analysis, which found that a deficit of about 500 kcal a day was enough to prevent lean mass gains, while strength still improved (Murphy & Koehler, 2022).
Protein: aim for at least 1.6 g per kg of body weight a day, or about 130 g at 80 kg. In a review of 49 studies, intakes above about 1.6 g/kg gave no further lean gains with lifting (Morton et al., 2018). Those studies were not mainly about dieting, and Longland's higher figure suggests that more can help in a steep deficit. Our protein guide covers timing and food sources.
Weekly weight change: if you want the scale to go down, keep it to about 0.25–0.5% of body weight a week, which is 0.2–0.4 kg at 80 kg. That is deliberately slower than the 0.7% in the athlete study, since most people aren't eating and training under a researcher's eye.

A 3-day body recomposition workout plan

Heavy, repeated lifting is what tells your body to keep and add muscle while food is short. So don't swap it for long circuits. Train on three days, for example Monday, Wednesday and Friday, and rest 1–3 minutes between sets of the big lifts (more in rest between sets).

Day A3 × 6–103 × 6–103 × 8–122 × 12–152 × 10–12
Day B3 × 8–103 × 8–103 × 8–122 × 8–10 per leg2 × 10–12
Day C3 × 8–123 × 8–123 × 8–122 × 10–122 × 10–12

Training at home? These swaps keep the same movements, and you need only dumbbells and a band.

Home swaps for the main lifts
Movement	Home exercise
Squat
Hinge
Press
Row
Pulldown

How to progress week by week

Weeks 1–2: find your working weights. End each set feeling you had about two reps left, and write the numbers down.
Weeks 3–8: add a rep wherever you can. When every set reaches the top of its range, go up by the smallest jump available and start again at the bottom of the range. Our progressive overload guide has other options.
Weeks 9–12: keep the same plan unless a lift has stalled for several sessions. Then change that one exercise and leave the rest alone. Plateau fixes can help.

The plan gives big muscle groups about 5–9 direct sets a week. Don't pile on more because you feel you should be doing extra while dieting: recovery tends to be harder on less food. Cardio is optional. If you add it, keep it easy enough that your leg days don't suffer.

How to track a recomp when the scale won't move

Your weight can stay flat for weeks while your body changes, and a single weigh-in also swings with water and food. So use three numbers together:

Body weight: weigh in 3–4 mornings a week and compare the weekly averages.
Waist: measure once a week, at the navel, under the same conditions.
Lifts: log weight and reps for every set. This is your best sign that muscle is being kept or built. See our workout log guide.

After 3–4 weeks, read them together:

What your numbers mean after 3–4 weeks
Weight	Waist	Lifts	What to do
Flat or slowly down	Down	Up	It's working. Change nothing.
Flat	Flat	Flat	Check that you are actually progressing and hitting protein, then eat 100–200 kcal less.
Falling fast	Down	Down	The deficit is too big. Eat 100–200 kcal more.
Up	Up	Up	You are in a surplus. Fine for building, but not a recomp. Eat 100–200 kcal less.

Common mistakes

Cutting calories hard from day one. Fat comes off faster at first, but you give up the muscle side you came for.
Judging by the scale alone. A flat weight with a smaller waist is exactly what you want.
Replacing heavy lifts with light circuits. Sweating more isn't the same as giving your muscles a reason to grow.
Changing the plan every few weeks. You lose the numbers that would show you it's working.
Quitting at week four. The changes are slow and usually show up better in a 12-week comparison.

Common questions

How long does body recomposition take?

Give it at least 8–12 weeks before you judge it. Lifts tend to move first, and a change in your waist usually takes longer to show.

Do I need to eat in a calorie deficit?

Not always. If you're a beginner or returning after a break, you can often get somewhere near maintenance, provided you train regularly and get your protein. For visible fat loss, though, a small deficit is usually easier.

Recomp or bulk and cut: which should I choose?

New, returning or with more fat to lose? Start with a recomp. Already lean and mainly after size? A planned surplus will likely get you there faster. More in how to increase lean muscle mass.

Can women do body recomposition?

Yes. The plan and the tracking are the same. Longland's trial tested only young men, so don't expect your numbers to match theirs. Measure your waist at the same point in your cycle if your weight swings around your period.

Is it safe?

For most healthy adults, a small deficit with gradual strength training is a reasonable approach. If you have diabetes, kidney disease, a history of eating disorders, an injury or are pregnant, talk to a doctor or dietitian before changing how you eat or train.

Body Recomposition: How to Lose Fat and Build Muscle at the Same Time