The most prevalent type of protein in the human body, collagen is a type of protein found in bones, muscles, skin, and tendons. It also makes up the majority of connective tissue’s structural elements, producing a scaffold that gives the tissue strength and structure. Women of Ancient China drank exotic, collagen-infused foods for ages to maintain their youthful complexion, demonstrating the long history of this protein. They consumed pig’s feet and gelatinous sea cucumbers, which were high in the collagen needed to maintain their youthful skin. This protein has several purposes, including holding your skin together by acting as glue. It also keeps skin supple and firm, assisting in moisture and nutrient retention.