Eating any type of food will provide you with energy to help you get through your daily activities. This isn't all you get from food during the digestive process, however. This process also provides you with a number of essential nutrients released during the breakdown of food by various enzymes, including vitamins, minerals, fiber and, in the case of protein, amino acids.
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Each protein is made up of a combination of the 20 amino acids, with different combinations forming different types of proteins. Some of these amino acids are essential, meaning your body can't make them, so you need to get them from the foods you eat. Enzymes called proteases break down protein you get from your diet, breaking the bonds holding together the amino acids so your body can use these amino acids to maintain bones, muscles and skin and make new proteins.