What happens to the body when the body overheats

The combination of temperature and humidity whereby a person’s core temperature starts to rise is called the “critical environmental limit.” 

• Below those limits, the body is able to maintain a fairly stable core temperature over time.
• Above those limits, core temperature rises continuously, and the risk of heat-related illnesses with prolonged exposures is increased.
• When the body overheats, the heart has to work harder to pump blood flow to the skin to disperse the heat. When you're also sweating, it decreases body fluids.
• In the worst case, prolonged exposure can cause heat stroke.