What a Cut Actually Is
A cut is a structured caloric deficit with the specific goal of reducing body fat while retaining as much lean muscle as possible. It's not a crash diet. It's not "eating clean." It's not doing extra cardio until you're exhausted.
The reason most cuts fail — or succeed but leave you looking flat and depleted rather than lean and defined — is that people conflate cutting weight with cutting fat. Your body will lose muscle as well as fat if you don't take specific steps to prevent it. This guide covers those steps.
How Much Fat You Can Realistically Lose
A natural lifter in a good cut can lose 0.5–1% of bodyweight per week as fat. For an 80kg man, that's 400–800g per week. Anything faster than this and you're increasingly likely to be burning muscle alongside fat.
This feels slow. It isn't. At 0.75% bodyweight per week, an 80kg man loses around 4–5kg of fat over 8 weeks. If you maintain your muscle while doing that, the visible transformation is significant.
The mistake is trying to compress a 12-week cut into 6 weeks. You can't speed up fat loss beyond physiological limits without muscle cost. Pick the right calorie target and let time do the work.
Calculating Your Calorie Target
Step 1 — TDEE. Your Total Daily Energy Expenditure is your maintenance number — the calories needed to stay at your current weight. Estimate: bodyweight in kg × 33–35 for a moderately active person. An 80kg man training 4x per week: approximately 2,640–2,800kcal maintenance.
Step 2 — Set the deficit. For a conservative cut that preserves muscle: 300–500kcal below TDEE. That 80kg man targets 2,200–2,450kcal per day.
Avoid: deficits over 750kcal. The larger the deficit, the faster the cut — but past a threshold, muscle retention degrades significantly. A 300–500kcal deficit is aggressive enough to produce visible changes on a 10–12 week timeline without destroying what you've built.
Step 3 — Monitor. Weigh daily, average weekly. If you're losing more than 1kg per week, add 100–150kcal. If you're not losing after 2–3 weeks, reduce by 100–150kcal. The TDEE calculation is an estimate — adjust based on actual results.
Protein: The Most Important Variable
During a cut, protein becomes more important than during a bulk, not less. When you're in a caloric deficit, the body is more likely to break down muscle for energy. High protein intake is the primary protection against this.
Target: 2.2–2.5g per kg of bodyweight during a cut. Slightly higher than in a bulk. For an 80kg man, that's 176–200g of protein per day from quality sources.
This number might feel unachievable. It isn't. Here's what it looks like:
- Breakfast: 4 eggs + Greek yoghurt = 40–45g protein
- Lunch: 200g chicken breast + cottage cheese = 60g protein
- Snack: protein shake = 25–30g
- Dinner: 200g salmon or beef mince = 40–45g
- Total: 170–180g without trying too hard
The remaining gap comes from protein in incidental foods — bread, oats, vegetables.
If you're only doing one thing on a cut, make it the protein target. The research is unambiguous: high protein intake is the strongest predictor of muscle retention during a deficit.
Training on a Cut: Don't Back Off
The instinct when cutting is to reduce training volume — you're eating less, you feel tired, the heavy sessions seem counterproductive. This is wrong.
Your training stimulus is the signal that tells your body to preserve muscle. Remove the stimulus and your body has no reason to keep the muscle. Keep the stimulus and the deficit takes fat preferentially.
The rules for training during a cut:
Keep the weights the same. Your strength may decline slightly (caloric deficit = less muscle glycogen), but you should be hitting similar numbers for the majority of the cut. If your squat drops 20kg in week 3, that's an aggressive deficit problem or a sleep problem — not a training problem.
Keep the volume the same or reduce slightly. If you were doing 20 sets per muscle group per week in your bulk, dropping to 15–16 is fine for a cut. Going to 8–10 is unnecessary and undermines muscle retention.
Drop the intensity-maximising techniques. Drop sets, supersets, myo-reps — all of these in a bulk are good. In a deep deficit, they're more recovery stress than the body can handle. Straightforward sets with proper progressive overload is the cut approach.
Cardio: A Tool, Not a Solution
Cardio burns calories. That's its utility in a cut. It doesn't specifically target fat or "get you lean" — it just increases total energy expenditure, which deepens the deficit slightly.
The mistake is using cardio as the primary cutting mechanism. Three 60-minute runs per week on top of a 4-day lifting programme is too much recovery stress in a deficit. It competes with muscle preservation.
The right approach:
- 2–3 sessions of low-intensity steady-state cardio per week (walking, cycling at moderate pace, incline treadmill)
- 20–30 minutes per session
- Keep it separate from lifting if possible (different time of day)
- Don't do intense HIIT cardio during a cut — it adds recovery demand without proportionally better fat loss compared to the lower intensity alternatives
The majority of your deficit should come from the kitchen, not the treadmill. Cardio is the top-up.
Cutting While Still Looking Like You Lift
The visual goal of a cut isn't "small." It's "defined." The difference is muscle fullness — which comes from maintaining your muscle and glycogen levels through adequate carbohydrates and training.
Don't eliminate carbohydrates. Low-carb approaches cut carbs aggressively to create a deficit. This works for weight loss but depletes muscle glycogen, making muscles look flat and smaller. Keep carbohydrates in your diet during a cut — just at a lower level than in your bulk. Oats, rice, potatoes, fruit. Enough to fuel training and keep muscles looking full.
Time carbohydrates around training. Eating carbohydrates before and after training sessions maximises their utility for muscle glycogen and minimises fat storage. On rest days, slightly lower carbohydrates is fine.
Stay hydrated. Muscle looks fuller when well-hydrated. Dehydration during a cut makes muscles appear flat even when body fat is coming down. 2.5–3 litres of water per day minimum.
How Long to Cut?
A well-structured cut runs 8–14 weeks. Beyond 16 weeks, hormonal adaptation (reduced leptin, increased cortisol, metabolic slowdown) makes the remaining fat increasingly resistant and muscle retention harder to maintain.
If you have more than 12kg to lose to reach your target body fat, break it into phases: cut for 10–12 weeks, maintain for 4–6 weeks (reverse diet back up to maintenance), then cut again. Continuous extended deficits are metabolically destructive.
The typical natural aesthetics annual cycle:
- September to February: lean bulk
- February to May: cut
- June to August: maintain and consolidate
This cycle gives 5 months of building, 3 months of leaning out, 2–3 months of looking your best in summer. It's not the only way to structure it, but it's sustainable and produces visible year-round progress.
Supplements Worth Using on a Cut
Creatine — keep taking it. The instinct is to stop creatine on a cut because it causes water retention. Creatine water retention is intracellular (inside the muscle cell) and makes muscles look fuller, not fatter. The strength and muscle preservation benefits are more valuable on a cut than during a bulk. Keep taking 3–5g daily.
Protein powder — necessary for hitting targets. When calories are reduced, getting 200g of protein from whole food alone becomes harder. One to two shakes per day fills the gap efficiently.
Caffeine — useful for energy. A cut on reduced calories often means reduced energy. 200mg of caffeine pre-workout (black coffee works perfectly) compensates for some of the deficit fatigue and improves training performance.
What you don't need: fat burners, thermogenics, or anything promising "accelerated fat loss." These are either caffeine in expensive packaging or compounds with minimal evidence. The deficit does the work. No supplement accelerates fat loss meaningfully beyond the calorie math.
The Mistakes
Losing weight too fast. Feels like progress. Losing 2kg per week is alarming if you're a natural lifter — a significant portion of that is muscle, not fat. Slow down.
Increasing cardio when the scale stalls. The stall is usually water retention masking fat loss. Increase cardio slightly, adjust calories slightly — but don't immediately add 3 new cardio sessions. Let the process work.
Stopping protein intake. "Eating less" often means eating proportionally less protein. The opposite is what's needed. When total calories drop, protein per calorie should increase.
Not sleeping enough. Sleep is when muscle is preserved and cortisol is regulated. In a deficit, short sleep dramatically increases muscle breakdown and impairs fat loss. 7–9 hours is non-negotiable on a cut. This is as important as the calorie target.
Supplements: Where to Buy
- Whey protein powder — Essential for hitting protein targets
- Creatine monohydrate — Preserve muscle and strength
- Caffeine tablets — Consistent pre-workout energy
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The Short Version
300–500kcal deficit. 2.2–2.5g protein per kg bodyweight. Keep lifting the same weights. 2–3 low-intensity cardio sessions per week. Keep carbohydrates in. Take creatine. Sleep 8 hours. Run for 10–12 weeks.
That's the cut. Everything else is detail.