Bodybuilding diets look extreme, but the logic is simple.
Protein gives your body the raw material to build muscle.
Carbs give your muscles the fuel to train harder, push more volume, and activate the growth signals.
Fat matters for health, but once you hit the minimum your body needs, extra fat doesn’t help you grow — it just steals calories from carbs and protein.
High protein = more muscle building.
High carbs = better performance and recovery.
Lower fat = more room for the stuff that actually drives hypertrophy.
That’s why the classic “high-protein, high-carb, lower-fat” setup keeps winning. It gives your body exactly what it needs to grow, nothing wasted.
- Weight Loss: This goal emphasizes a high protein, low carb, and low fat diet, with a macro split of 35-50% protein, 25-45% carbs, and 20-35% fat.
- Maintenance: This goal focuses on moderate intake of all three macronutrients, with a macro split of 25-40% protein, 35-55% carbs, and 25-40% fat.
- Muscle Gain: This goal prioritizes high protein and high carbs while keeping fat low, with a macro split of 35% protein, 45% carbs, and 20% fat.
WEIGHT LOSSHigh protein, low carb, low fat (35–50% P / 25–45% C / 20–35% F)
100 kg male @ 2,500 kcal• Protein 40% → 1,000 kcal → 250g protein• Carbs 35% → 875 kcal → 219g carbs• Fat 25% → 625 kcal → 69g fat