Protein is one of the three major macronutrients that provide the body with energy (the other two are carbohydrates and fats.) Protein is made up of long chains of amino acids, and nine of these amino acids are considered essential, meaning the body cannot produce them on its own. We must get them from the foods we eat. What Does Protein Do For Your Body? A Lot!! Protein plays a role in a wide range of essential processes that help keep your body functioning at its best. Mus