Hydration plays a critical role in muscle function during exercise. Adequate fluid intake helps maintain blood volume, regulate body temperature, and prevent dehydration, which can impair physical performance. Dehydration leads to reduced strength and endurance, increased fatigue, and a higher risk of muscle cramps and injury. Maintaining proper hydration levels supports optimal muscle contractions and promotes efficient nutrient delivery to muscle tissues. Drinking water or electrolyte-rich beverages before, during, and after exercise helps ensure that muscles function effectively and recovery occurs smoothly.