Hydration plays a vital role in temperature regulation during exercise. When the body heats up during physical activity, sweat production increases to cool it down. Adequate hydration ensures efficient sweat production and proper electrolyte balance, preventing overheating, heat exhaustion, or heat stroke. Dehydration can impair performance, leading to fatigue, decreased coordination, and increased risk of injuries. Drinking fluids before, during, and after exercise helps maintain optimal body temperature and overall athletic performance, making hydration essential for any fitness routine.