Thermoregulation and sweating efficiency in physical fitness

Increased sweating during exercise is not necessarily an indicator of poor physical condition. According to Hans-Georg Predel, a physician at the University of Cologne, frequent training can cause the body to activate thermoregulation mechanisms more efficiently, leading individuals to sweat sooner than sedentary people.

Sweating serves as a cooling mechanism where the evaporation of sweat from the skin extracts heat from the body to maintain a temperature around 37 °C. While the hypothalamus triggers blood vessel dilation and sweat gland activation to prevent overheating, high humidity can reduce the efficiency of this cooling process by slowing evaporation. If body temperature exceeds 40 °C, there is a significant risk of heatstroke and damage to the heart, brain, and muscles.