Thermal regulation relates to exercise performance as the body must maintain a stable core temperature while engaging in physical activity. When exercising, the body generates heat, and efficient thermoregulation is crucial to prevent overheating. If the body cannot cool itself through processes like sweating, it can lead to decreased performance and heat-related illnesses. Hydration status also plays a significant role, as fluid loss can impair thermoregulation. Therefore, understanding thermal balance is essential for optimizing performance and safety during exercise, especially in extreme temperatures.