How to Cut Body Fat Without Losing Muscle: A Scientific Approach
TL;DR: A review focused on natural bodybuilding preparation suggests roughly 0.5–1% bodyweight loss per week as a starting range. Leaner athletes may need the slower end. Keep protein sufficient, continue resistance training, and adjust the deficit if performance or recovery deteriorates.
Checklist
- Rate of loss: use roughly 0.5–1% of bodyweight per week as a starting range, not a universal target; bias slower as you get leaner.
- Protein: the ISSN position stand gives 1.4–2.0 g/kg/day for most exercising adults and notes that resistance-trained people in a calorie deficit may benefit from more.
- Resistance training: keep productive work in the program and adjust volume or load when recovery declines.
- Sleep 7–9h; manage stress.
Training tweaks
- Keep compounds; drop junk volume first.
- Use RIR 1–2 to limit fatigue.
Sources
- Helms et al. (2014): Evidence-based recommendations for natural bodybuilding contest preparation
- International Society of Sports Nutrition position stand: protein and exercise (2017)
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