The primary role of protein in the body is to support growth, repair, and maintenance of tissues. Proteins are made up of amino acids, which are the building blocks of cells and play a critical role in muscle development and recovery, enzymatic processes, and hormone production. Additionally, protein supports immune function and is necessary for creating important molecules such as hemoglobin. Adequate protein intake is essential for everyone, particularly for individuals engaged in regular exercise or those recovering from injury or illness, as it aids in muscle repair and overall body function.