Understanding Macronutrients: Protein, Carbs & Fat

Macronutrients are the three main nutrients that provide your body with energy: Protein, Carbohydrates, and Fat. Each serves unique functions and provides a specific amount of calories per gram:

• Protein: 4 kcal per gram – Building blocks for muscles, enzymes, and immune system
• Carbohydrates: 4 kcal per gram – Primary energy source, especially for the brain
• Fat: 9 kcal per gram – Hormone production, vitamin absorption, cell protection

Protein is the most important macronutrient for anyone looking to build or maintain muscle. The recommended intake based on current research:

• Muscle building: 1.6–2.2 g per kg body weight
• Maintenance (diet): 2.0–2.4 g per kg body weight
• General health: 0.8–1.0 g per kg body weight

Great protein sources: chicken breast, Greek yogurt, eggs, legumes, fish, and tofu. Use our Protein Calculator to determine your individual needs.

Carbohydrates are your body's preferred energy source, especially during intense training. They are broken down into glucose and stored in muscles as glycogen.

Types of carbohydrates:

• Complex (slow): Whole grains, oats, sweet potatoes – provide sustained energy
• Simple (fast): Fruit, sugar, white flour – quick but short-lasting energy

For athletes, an intake of 3–7 g per kg body weight is recommended, depending on training intensity and volume.

Fat is not the enemy – it's essential for your body. Fat regulates hormones (including testosterone), protects organs, and aids in the absorption of fat-soluble vitamins (A, D, E, K).

Recommendation: At least 0.8–1.0 g of fat per kg body weight. Don't consistently go below this threshold, as it can impair your hormonal balance.

Good fat sources: Olive oil, avocado, nuts, fatty fish (omega-3), flaxseeds.

There's no universal macro ratio. Your optimal distribution depends on your goals:

• Muscle building: ~30% Protein, ~45% Carbs, ~25% Fat
• Weight loss: ~35% Protein, ~35% Carbs, ~30% Fat
• Endurance sports: ~20% Protein, ~55% Carbs, ~25% Fat

The most important factor remains your total calorie intake. Use our Calorie Calculator to determine your TDEE, then distribute macros accordingly.