Hydration plays a critical role in supporting athletic performance by maintaining fluid balance, regulating body temperature, and optimizing muscle function. Proper hydration helps to prevent fatigue and reduces the risk of heat-related illnesses during physical activities. Water facilitates nutrient transport and waste removal, enhancing overall physical efficiency. For athletes, staying hydrated is essential for peak performance, recovery, and endurance, highlighting the importance of adequate fluid intake before, during, and after exercise.