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The quality of your fuel dictates your performance. You cannot expect premium performance if you're supplying your body with subpar fuel. We can determine the quality of fuel our body receives by looking at our macronutrient consumption.

Macronutrients (or "macros" for short) are, by definition, "substances required in relatively large amounts by living organisms". In the human diet, the three primary macronutrients are protein, fat, and carbohydrate. Each macronutrient provides energy, but each one serves a different purpose.