Losing fat without losing muscle is the holy grail of body recomposition. It requires a strategic approach to your deficit, protein intake, and training.
Setting Your Deficit
Moderate deficit: 300-500 kcal/day — Optimal for muscle retention. Produces 0.25-0.5 kg fat loss per week. Sustainable and performance-friendly.
Aggressive deficit: 500-750 kcal/day — Faster results but higher risk of muscle loss, increased hunger, and metabolic adaptation. Only recommended for short periods (4-6 weeks).
Never go below: BMR (basal metabolic rate). Extreme deficits cause disproportionate muscle loss, hormonal disruption, and metabolic adaptation.
The Protein Priority
During a caloric deficit, protein becomes even MORE important than during maintenance or bulking.
Recommendation: 1.8-2.4g protein per kg bodyweight during a cut (higher than the standard 1.6-2.2g for maintenance).
Why? In a deficit, your body upregulates protein breakdown. Higher protein intake counteracts this, preserving lean mass while the deficit targets fat stores.
Spread protein across 4-5 meals with 30-40g per meal. Include a protein-rich meal before bed (casein or cottage cheese) to support overnight recovery.
Training During a Cut
The biggest mistake: switching to high-rep, low-weight training during a cut. This removes the primary stimulus for muscle retention.
Keep lifting heavy. Your training should maintain the same intensity (weight on the bar) that built the muscle. You may need to reduce volume (fewer sets) to account for reduced recovery capacity, but never reduce intensity.
Priority order during a cut:
1. Maintain training intensity (weight/load)
2. Maintain training frequency (3-5 days per week)
3. Reduce volume if recovery is impaired (drop 1-2 sets per exercise)
4. Keep compound movements as the foundation
Managing Metabolic Adaptation
After 8-12 weeks of deficit, your metabolism adapts: BMR drops, NEAT decreases, hunger hormones increase. Combat this with:
- **Diet breaks**: 1-2 weeks at maintenance calories every 8-12 weeks
- **Refeed days**: 1-2 high-carb days per week (back to maintenance, not a binge)
- **Reverse dieting**: When your cut is done, slowly increase calories by 100-150 kcal per week back to maintenance