Body temperature affects exercise performance by influencing metabolism, muscle function, and cardiovascular response. During exercise, the body generates heat, which can lead to increased core temperature. If the body overheats, performance may decline as cardiovascular strain increases and muscle efficiency decreases. Individual tolerance to temperature changes varies, necessitating adjustments in hydration and clothing. Maintaining an optimal body temperature through proper hydration, acclimatization, and environmental awareness is essential for enhancing athletic performance, particularly in extreme conditions.