Hydration status plays a crucial role in exercise performance, affecting endurance and overall efficiency. Dehydration can lead to decreased physical performance, increased body temperature, and impaired cognitive function. Maintaining optimal hydration levels ensures proper muscle function and can prevent fatigue and cramps. Athletes should monitor their fluid intake before, during, and after exercise to avoid compromising performance. Adequate hydration supports nutrient transport and muscle recovery, making it essential for anyone engaged in physical activity.