What macronutrient is primarily responsible for muscle repair and growth?
Protein is the macronutrient primarily responsible for muscle repair and growth. It plays a crucial role in muscle protein synthesis, helping the body repair micro-tears caused during exercise, particularly in resistance training. Consuming adequate protein post-workout provides the amino acids necessary for recovery, facilitating the development of lean muscle mass. Sources of high-quality protein include meat, fish, eggs, and plant-based options like tofu and legumes. Incorporating these foods into a balanced diet is essential for optimizing physical performance and achieving fitness goals.