What is the main effect of hydration on exercise performance?

Hydration plays a crucial role in maintaining exercise performance, particularly through its effect on regulating body temperature. During physical activity, the body generates heat, and proper hydration helps dissipate this heat through processes such as sweating and increased blood flow to the skin. When the body is adequately hydrated, it can effectively manage its temperature, which is vital for sustaining endurance and overall performance.

If hydration levels drop, the body becomes less efficient at cooling itself, leading to overheating, increased heart rate, dehydration-related fatigue, and ultimately a decline in exercise performance. This highlights the significance of maintaining optimal hydration for those engaging in physical activity, ensuring that body temperature remains stable, which is essential for optimal function and performance during exercise.