Understanding Macronutrients
Macronutrients are the three main categories of nutrients that provide energy: protein, carbohydrates, and fats. Each plays a distinct role in body composition, performance, and health. Getting your macro split right is the foundation of evidence-based nutrition.
Why Macros Matter More Than Calories Alone
- Protein (4 kcal/g): Preserves and builds muscle tissue. Crucial during fat loss to prevent 'skinny fat' results. Target: 0.8-1.2g per pound of body weight.
- Carbohydrates (4 kcal/g): Primary energy source. Fuel performance in the gym and daily activities. Not the enemy — timing and quantity matter.
- Fat (9 kcal/g): Essential for hormone production, brain function, and fat-soluble vitamin absorption. Never go below 0.3g per pound of body weight.
IIFYM — If It Fits Your Macros
The flexible dieting approach (IIFYM) allows eating any food as long as it fits within your daily macro targets. This improves long-term adherence compared to rigid restrictive diets.