Dehydration has a detrimental effect on athletic performance, leading to decreased strength, endurance, and focus. Even mild dehydration can result in reduced physical capabilities, increased heart rate, and impaired thermoregulation. It can also cause fatigue and muscle cramps, significantly impacting overall performance. Staying properly hydrated is crucial, especially during intense exercise or hot weather, as it ensures optimal function and enhances recovery. Athletes should regularly monitor their fluid intake to prevent dehydration and maintain peak performance.