Calerys mascotCalerys

Body recomposition -- Definition and explanation

Body recomposition is losing fat and gaining muscle at the same time.

Definition

Body recomposition (or "recomp") is the process of losing fat while simultaneously gaining muscle mass. Unlike the traditional approach of alternating bulking and cutting phases, recomposition aims to improve body composition without necessarily moving the scale.

Detailed explanation

How is it possible?

For a long time, many lifters thought it was impossible to lose fat and build muscle at the same time, arguing you need a calorie surplus to build muscle and a deficit to lose fat. The reality is more nuanced.

Your body can use its fat reserves as an energy source to fuel muscle protein synthesis, as long as a few conditions are met. The energy stored in body fat gets redirected toward building muscle when the training stimulus and protein intake are dialed in.

Who recomposition works best for

Body recomposition works particularly well for certain profiles:

  • Beginners in the gym: the "newbie gains" effect lets you build muscle fast, even in a slight calorie deficit. This is when recomposition is easiest.
  • Overweight individuals: they have enough energy stored to support muscle growth while losing fat.
  • People coming back to training after a break: muscle memory helps rebuild lost muscle quickly.
  • Undertrained people: those who weren't optimizing their program or nutrition before.

For advanced and already-lean lifters, recomposition is much slower and harder. The classic bulk/cut approach usually remains more efficient.

The keys to success

Body recomposition demands real discipline on three fronts: high protein intake (1.8 to 2.2 g/kg minimum), a progressive resistance training program with progressive overload, and a calorie intake close to maintenance (a small 100–200 kcal deficit or strict maintenance). The process is slower than an aggressive deficit, but the aesthetic and functional result is often better.

In practice

To set up an effective recomposition, start by figuring out your protein needs with the protein calculator and your macro split with the macro calculator.

Here's the recommended strategy:

  • Eat at maintenance or in a very small deficit (100–200 kcal).
  • Prioritize protein at every meal (30–40 g per serving).
  • Run a resistance training program 3 to 5 times a week with steady progression.
  • Don't trust the scale: track progress with photos, body measurements, and your gym performance.
  • Be patient: recomposition takes months, not weeks.

Want to track your body recomposition easily? Try Kalo on WhatsApp — your nutrition coach analyzes your meals in seconds.

Want to track your nutrition without overthinking it?

Try Kalo on WhatsApp