For rapid cooling, partially submerge the victim's body in cool water. You can prevent the serious consequences of heat disorders by improving your level of fitness and becoming acclimated to the heat. Maintaining a high level of aerobic fitness is one of the best ways to protect yourself against heat stress. The fit worker has a well-developed circulatory system and increased blood volume. Both are important to regulate body temperature.
Fit workers start to sweat sooner, so they work with a lower heart rate and body temperature.
They adjust to the heat twice as fast as the unfit worker. They lose acclimatization more slowly and regain it quickly. Decreases the heart rate, and lowers the skin and body temperatures. You can acclimatize by gradually increasing work time in the heat, taking care to replace fluids, and resting as needed. You maintain acclimatization with periodic work or exercise in a hot environment.