Cutting Diet: How to Lose Fat While Keeping Muscle

Keep the Deficit Moderate

The biggest lever for preserving muscle during a cut is not cutting too aggressively. A deficit of 300-500 calories below maintenance (roughly 0.5-1% of bodyweight lost per week) allows fat loss while minimizing muscle loss. Larger deficits speed up fat loss but increase the risk of losing muscle along with it — faster isn't better here.

Keep Protein High — Higher Than When Bulking

Protein needs actually go up in a deficit, not down. Aim for 1.8-2.4g per kilogram of bodyweight (higher end of the typical range) — protein is what signals your body to preserve muscle tissue even while running a calorie deficit, and it's also the most satiating macro, which matters when calories are limited.

Keep Lifting Heavy

Diet alone doesn't preserve muscle — continuing to train with the same intensity (even if total volume drops slightly) is what tells your body the muscle is still needed. Cardio can help with the deficit, but resistance training is what protects muscle mass during a cut.

A Sample Cutting Day (~1,580 kcal, 156g Protein)

• Breakfast: Greek Yogurt Parfait — 310 kcal, 24g protein, 32g carbs, 6g fat
• Lunch: Grilled Chicken Caesar Salad — 450 kcal, 42g protein, 12g carbs, 24g fat
• Snack: Chocolate Protein Shake — 260 kcal, 28g protein, 22g carbs, 4g fat
• Dinner: Baked Cod with Mediterranean Salad — 380 kcal, 40g protein, 12g carbs, 18g fat
• Snack: Hard-Boiled Eggs with Everything Seasoning — 155 kcal, 12g protein, 1g carbs, 10g fat

That's 1,555 kcal and 146g of protein — high protein and moderate deficit, exactly the combination that helps preserve muscle while losing fat. You can generate a similar day matched to your own calorie and protein targets with our free AI meal planner, using the High-Protein filter and your own calorie ceiling.

Signs You're Cutting Too Fast

• Strength dropping noticeably week to week in the gym
• Constant hunger and poor sleep
• Losing more than about 1% of bodyweight per week consistently

If any of these show up, it's usually a sign to ease the deficit rather than push through.

Keep Reading

• Best Foods for Muscle Gain: A Bulking Diet Guide
• 7-Day Weight Loss Meal Plan (With Calories & Macros)