Temperature has a significant impact on exercise performance, as both ambient temperature and humidity can affect thermoregulation. In hot conditions, the body relies on sweating to dissipate heat, which can lead to dehydration if fluid loss is not replenished. This can result in reduced endurance, increased perceived exertion, and a higher risk of heat-related illnesses. Conversely, exercising in cold environments can impair muscle function and increase the risk of injuries if proper precautions are not taken. Maintaining an optimal temperature is essential for peak performance.