The role of hydration in athletic endurance is crucial, as it helps regulate body temperature, maintain electrolyte balance, and prevent dehydration. Proper hydration ensures optimal blood volume, which facilitates improved circulation and nutrient delivery to muscles during prolonged activities. It also aids in preventing fatigue and enhancing performance. Athletes are encouraged to drink fluids before, during, and after exercise to support stamina and recovery, especially in hot or humid conditions where fluid loss is significant.