Nutrition · 6 min read · Updated September 2026
How to approach cutting without losing muscle
A practical, evidence-based cutting plan: how fast to lose, how much protein, how to train, and how to handle plateaus.
Key takeaways
- Lose 0.5–1% of bodyweight per week; slower when already lean.
- Keep protein high: 2.3–3.1 g/kg of lean mass for lean lifters.
- Keep lifting heavy — it is the signal to keep muscle.
- Judge progress on two-week averages, not single weigh-ins.
A cut has one job: lose fat while keeping the muscle you worked for. Four levers decide whether that happens.
1. Rate of loss
Helms et al. (2014) recommend 0.5–1% of bodyweight per week for lifters. The leaner you are, the slower you should go — muscle loss rises when a lean body is pushed hard.
- Higher body fat: ~1% per week is reasonable.
- Moderate: ~0.7%.
- Already lean: ~0.5%.
The cutting calculator turns that into a daily calorie target and estimates how many weeks your goal will take. Set the goal as a body-fat percentage with the target body fat calculator — it is a clearer finish line than a scale weight.
2. Protein
Protein is what protects muscle in a deficit. For lean lifters, 2.3–3.1 g per kg of lean mass; for everyone else, ~2.2 g per kg of bodyweight is a sound default. High protein also helps with hunger.
3. Training
Keep lifting heavy. The reason your body keeps muscle in a deficit is that you keep using it. You can reduce volume by a third if recovery suffers, but keep the loads — intensity is the signal.
Cardio is a tool, not a requirement. Daily steps (8–12k) are the lowest-fatigue way to increase the deficit.
4. Patience with the scale
Water retention can mask fat loss for a week or more, especially when stressed or eating more salt. Compare two-week averages, and track your waist: if the waist is shrinking, fat is being lost, whatever the scale says.
When to stop
- You have reached your target body fat.
- Performance has dropped for several weeks.
- Sleep, mood or hunger have become hard to manage.
Then bring calories back up to your new maintenance over a week or two. Sustaining the result is the point of the exercise.
Apply it to your numbers
Deficit, weekly rate and time to your target body fat.
Written for healthy adults, for education — not medical advice. If you have a medical condition, are pregnant or have a history of disordered eating, speak to a qualified professional before changing your diet. How we handle evidence: methodology.
Next guideHow to approach bulking (and keep it lean)