Protein is one of the major nutrient components of a well-balanced diet.
You body needs to acquire a specific amount of protein on a regular basis in order to literally maintain the integrity of almost every single cell in your body, including your bones, hair, teeth, nails, skin, etc. Your skeletal muscles, like your biceps, are chiefly comprised of protein tissue. Collagen, the connective tissue that literally holds your body together, is also pure protein. Protein-based cells make it possible to transport nutrients and oxygen through your bloodstream and into and out of cells. Proteins are actually made up of smaller protein chains.