Hydration influences athletic endurance significantly. Adequate fluid intake is essential for maintaining physical performance and preventing dehydration, which can lead to fatigue and impaired cognitive function. During exercise, the body loses water through sweat, and even mild dehydration can negatively impact endurance and strength. Staying well-hydrated helps regulate body temperature, supports nutrient transportation, and maintains optimal muscle function. Ensuring proper hydration before, during, and after physical activity is crucial for maximizing performance and sustaining energy levels throughout workouts.