A cutting phase means losing fat while keeping as much muscle as possible. The essentials are a moderate calorie deficit, high protein, continued heavy lifting and enough sleep. Compounds and supplements can help at the edges but cannot replace those basics.
- Aim to lose about 0.5–1% of body weight a week.
- Keep protein high: about 1.8–2.7 g per kilogram of lean body weight is used by lean athletes.
- Keep lifting heavy; it tells your body to keep the muscle.
Most people can lose weight. The skill is losing fat without losing the muscle that took years to build. This guide covers what research and experienced coaches agree on, including where compounds fit and where they do not.
Set the deficit
Fat loss requires eating fewer calories than you burn. The size of the deficit matters:
| Rate of loss per week | Who it suits | Muscle risk |
|---|---|---|
| About 1% of body weight | Higher body fat | Low to moderate |
| About 0.5–0.7% | Moderate body fat, most lifters | Low |
| Under 0.5% | Already lean | Lowest |
The leaner you are, the slower you should go. Track weekly average weight and waist measurement rather than daily scale readings.
Protein is the priority
High protein reduces muscle loss during a deficit and keeps hunger down. Research in lean, resistance-trained athletes supports intakes of about 2.3–3.1 g per kilogram of fat-free mass; for most people, about 1.8–2.2 g per kilogram of body weight is a practical target. Lean meats, fish, eggs, Greek yogurt, cottage cheese, tofu and protein powder make it achievable. See workout nutrition when cutting.
Keep lifting heavy
The most common mistake is switching to light weights and high reps “to tone”. Heavy training is the signal that tells your body the muscle is still needed. Keep the same core lifts and try to maintain the loads; it is normal for volume to drop slightly late in a cut. Our guide to preserving muscle while losing weight goes further.
Cardio and daily movement
- Steps first: daily walking adds calorie burn with little effect on recovery. Many coaches aim for 8,000–12,000 steps.
- Cardio as a tool: two to four sessions a week of moderate cardio or intervals can widen the deficit. See HIIT workouts.
- Do not rely on cardio alone; eating less is usually easier than burning much more.
Diet breaks and refeeds
Long diets reduce energy use through hormonal and behavioural changes, sometimes called metabolic adaptation. Planned breaks at maintenance calories for one to two weeks, every couple of months, can help with adherence and performance. See why fat loss stalls.
Where compounds fit
Anabolic steroids reduce muscle loss during a deficit, which is why they are used in contest preparation. Compounds often discussed for cutting phases, such as Anavar, Primobolan or Winstrol, add little water, which is why they are described as “cutting” compounds. Fat burners such as clenbuterol and thyroid hormone carry serious heart risks.
What compounds do not do is replace the deficit. Without eating less than you burn, no compound produces meaningful fat loss. And a deficit plus compounds that lower HDL and raise blood pressure still strains the heart.
Sleep and stress
In one study, dieters who slept 5.5 hours lost far more muscle and less fat than when they slept 8.5 hours on the same diet. Sleep is one of the cheapest ways to protect muscle during a cut. See sleep and recovery.
A sample week of eating on a cut
Structure makes a deficit easier to keep. A simple pattern many people follow:
- Three or four meals, each built around 30–50 g of protein.
- Vegetables at most meals for volume and fibre, which keep hunger down.
- Carbohydrates around training, such as oats or rice before and after, to keep workouts strong.
- Planned treats rather than banned foods, to avoid binges.
- Low-calorie drinks: water, sparkling water, black coffee and tea. Alcohol adds calories and lowers training quality.
Weigh food for a couple of weeks to learn portion sizes; most people underestimate what they eat by a surprising margin. See counting macros for a simple method.
Health checks
Long or aggressive cuts can lower testosterone, thyroid hormones and energy. For anyone using compounds, bloodwork before and during, including lipids, liver enzymes and a complete blood count, plus home blood pressure checks, is essential. See our bloodwork guide.
Frequently asked questions
How fast should I lose weight on a cut?
About 0.5–1% of body weight a week for most people, slower if you are already lean.
Can I keep muscle while cutting?
Yes, with a moderate deficit, high protein, continued heavy lifting and enough sleep.
Do cutting steroids burn fat?
Not on their own. They help preserve muscle and reduce water, but fat loss still depends on a calorie deficit.
Photo: Cristian Baron, StockSnap (public domain).
General information, not medical advice. Speak to your doctor before starting an aggressive diet or any fat-loss medication.
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