Macros are macronutrients. Your body needs these nutrients in larger amounts in order to function properly as macro means large. In addition, all of these nutrients provide your body with energy measured in the form of calories or kcals. There are three types of macronutrients: carbohydrates, proteins, and fats.

• Carbohydrates contain 4 kcal per gram

• Protein contains 4 kcal per gram

• Fats contain 9 kcal per gram  (this is roughly double the amount found in the other two macros)