Hydration is significant before, during, and after exercise as it supports optimal bodily functions and performance. Pre-exercise hydration helps maintain body temperature and muscle function, reducing the risk of cramping and fatigue. During exercise, proper fluid intake prevents dehydration, which can impair endurance and cognitive function, ultimately affecting performance. Post-exercise hydration aids in recovery by replenishing fluids lost through sweat. Additionally, adequate hydration before and after workouts contributes to nutrient transport and recovery, making it essential for improving athletic performance and overall health.