Cutting Diet PlanLose Fat. Keep Every Pound of Muscle.

A cutting diet is not just a smaller version of your normal diet. It is a temporary fat-loss phase where the calorie deficit is deliberate, protein is higher than usual, and training is managed so the body has a reason to keep muscle. The mistake most people make is treating "cutting" as a race. The faster the scale drops, the more likely you are to lose training performance, water, glycogen, and eventually lean tissue.

The calorie deficit should start with maintenance calories. This page uses Harris-Benedict to estimate resting metabolism, multiplies by activity level, then subtracts the selected deficit. NHLBI's public guidance says a reduction around 500-750 calories per day often maps to a common weight-loss pace; see their healthy eating plan calorie guidance. Their clinical key recommendations also describe a 500-1,000 kcal/day deficit as part of programs aimed at 1-2 lb/week loss, but that larger range is not automatically ideal for lifters trying to preserve muscle.

For muscle retention, the practical default is smaller: 300-500 calories per day. A 300 kcal deficit is slow enough to keep training stable during the calibration phase. A 500 kcal deficit creates clearer weekly progress while still leaving room for hard sessions. A 750 kcal deficit can be useful for short phases, but it should be paired with higher protein, careful fatigue monitoring, and a plan to exit before performance falls apart.

Protein rises during a cut because the body is underfed. In a randomized trial by Longland and colleagues, young men in a large energy deficit who consumed 2.4 g/kg/day protein while training intensely had better lean-mass and fat-loss outcomes than a lower-protein group. The PubMed record is here: higher versus lower protein during an energy deficit. For very lean resistance-trained athletes, a natural bodybuilding review discusses even more specific targets based on fat-free mass; see the evidence-based contest preparation review.

Resistance training is the second half of the muscle-retention system. Diet alone can make the scale move, but it does not give the body a strong reason to keep contractile tissue. A systematic review and meta-analysis on resistance training in people with overweight and obesity found resistance-based programs useful in body-composition management when caloric restriction is used; see the PMC review on resistance training and body composition. In practice, keep the heavy lifts in. You may reduce volume if recovery drops, but do not turn a cut into only cardio and restriction.

Carbohydrates are not the enemy during a cut. They are the easiest macro to flex around training. This page keeps a meaningful carbohydrate target because hard sessions need fuel, especially when calories are already lower. Refeed days are not magic, but a planned higher-carbohydrate day can make the exit-ramp phase more sustainable and can restore training quality for some people.

Dietary fat also has a floor. Extremely low-fat dieting may make it easier to hit a low calorie target, but it can be a poor trade if it crowds out essential fats and makes the diet harder to sustain. A systematic review and meta-analysis reported that low-fat diets appeared to reduce testosterone levels in men, though more trials are needed; the paper is indexed at ScienceDirect. This planner therefore keeps fat near 20% of calories and at least 0.5 g/kg.

The clean workflow is simple: calculate TDEE, pick the smallest deficit that produces measurable progress, set protein high enough to protect lean mass, keep lifting, and run the phase for a defined window. After 8-16 weeks, reassess. If training performance is falling, hunger is high, or the weight trend has stalled for several weeks, a maintenance phase may be more productive than another round of restriction.

This page is an educational planning tool, not medical care. People with diabetes, eating-disorder history, pregnancy, kidney disease, adolescent growth needs, or physician-directed diets should use a clinician-guided plan.