Peptides are short chains of amino acids, which are the building blocks of proteins. They play a crucial role in many biological functions, including hormone regulation, immune response, and cell signaling. When amino acids link together, they form a peptide, and when many peptides combine, they create larger proteins that perform various tasks in the body. In the world of health and fitness, peptides are often discussed for their potential benefits, such as muscle growth and fat loss. Some athletes and bodybuilders use specific peptides to enhance performance, while researchers explore their therapeutic uses in treating diseases and promoting overall well-being.