Cutting vs. Bulking vs. Recomp: How to Choose

The short answer: choose based on two things, your starting body fat and your training experience.

• Higher body fat: cut, or recomp.
• Lean and experienced: a slow bulk usually builds muscle fastest.
• New to training, or somewhere in between: a recomp at roughly maintenance is often the simplest start.

Whichever you choose, the evidence-based rates are slower than most people expect, and the only way to know it’s working is a composition trend, not the scale.

The three options, defined

Phase	Calories	Goal	Evidence-based rate
Cut	Deficit	Lose fat, keep muscle	~0.5–1% of body weight/week (Helms et al., 2014); ≤0.5%/week preferred for lean-mass retention (Roberts et al., 2020)
Bulk	Surplus (~10–20%)	Maximize muscle gain	~0.25–0.5% of body weight/week for novice/intermediate lifters (Iraki et al., 2019)
Recomp	Roughly maintenance or small deficit	Lose fat and gain muscle at once	Weight roughly stable; progress measured by composition

These rates come from reviews aimed at natural bodybuilders and physique athletes, the population that has studied the question most carefully. They’re sensible starting points for anyone who lifts.

Why slow is the evidence-based speed

Cutting: in a study of elite athletes who strength trained while dieting, those losing about 0.7% of body weight per week increased lean body mass by 2.1%. Those losing about 1.4% per week lost a similar share of weight but didn’t gain lean mass. Faster isn’t just harder, it trades away the muscle you’re trying to reveal.

Bulking: a bigger surplus doesn’t build muscle proportionally faster. Muscle growth has a biological speed limit; extra energy past that mostly becomes fat. That’s why the 2019 review recommends a modest surplus and a slow rate of gain.

A practical way to choose

This is a starting framework, not a rule:

Cut (or recomp) first if

• your body fat is at or above the upper end of the healthy range for your age and sex (roughly 20% for men and 33% for women aged 20–39, per Gallagher et al., 2000, rising with age; see the visual guide for what ranges look like), or
• your main goal right now is to be leaner and health markers matter to you.

Bulk if

• you’re relatively lean,
• you’ve trained consistently for a year or more and strength has plateaued at maintenance, and
• you’re willing to accept a small, controlled rise in body fat.

Recomp if

• you’re new to training or returning after a long break,
• you’re “in between”: not lean, not carrying much excess fat, or
• you feel skinny fat: a normal weight with little muscle (a body fat estimate helps confirm it). Recomposition has been documented in trained lifters too, but it tends to be fastest for beginners and people with more fat to lose.

How to know your choice is working

Phase	Weekly avg. weight	Waist	Strength	Body fat trend	FFMI (quarterly)
Cut	Falling ~0.5–1%/wk	Falling	Holding	Falling	Holding
Bulk	Rising ~0.25–0.5%/wk	Rising slowly or holding	Rising	Holding or rising slightly	Rising
Recomp	Roughly stable	Falling	Rising	Falling	Holding or rising

If a bulk shows your waist climbing as fast as your weight, slow down. If a cut shows strength dropping across lifts, slow down. If a recomp shows nothing changing in any column after 8–12 weeks, it’s time to pick a direction.

For the signals in more detail, see how to know if you’re gaining muscle or fat. For why the scale is the least reliable column in that table, see why your weight changes before your body does.

Tracking the columns that matter

Most phases get judged by the one column that can’t tell fat from muscle: weight. Corpus is built to fill in the others. A guided photo check-in, captured the same way every week, produces an estimated body-fat trend, FFMI and muscle-group views next to your logged weight, so a cut, bulk or recomp is judged on composition rather than on a number that mostly measures water.