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Proteins are essential for muscle repair after exercise due to their role in providing the amino acids necessary for muscle protein synthesis. During physical activity, especially resistance training, muscle fibers experience minor damage, leading to soreness. To repair this damage and promote muscle growth, the body utilizes proteins as building blocks to restore the structural integrity of muscle tissue.

Amino acids, which are the components of proteins, are actively involved in various physiological processes, including the repair and rebuilding of damaged muscle tissue. The presence of adequate protein in one’s diet facilitates the recovery process, enhances muscle collagen synthesis, and supports the overall adaptation to training.

While carbohydrates are important for energy replenishment and fats play roles in overall health and energy storage, they do not directly contribute to the muscle repair process to the same extent as proteins. Similarly, while vitamins support metabolic processes and overall health, they do not provide the structural elements necessary for muscle tissue repair. Thus, proteins are recognized as the crucial nutrient needed specifically for muscle recovery following exercise.