Proteins serve several primary roles in the body related to fitness, particularly in muscle repair and growth after exercise. They are essential for building and maintaining muscle tissue, supporting metabolism, and producing enzymes and hormones. Additionally, proteins help to prevent muscle breakdown during rigorous training, facilitating recovery and enhancing overall athletic performance. Adequate protein intake is crucial for athletes and active individuals to optimize their results and body composition goals. Including high-quality protein sources in the diet supports both short-term recovery and long-term adaptations to resistance training and exercise regimens.