Heat-Related Illnesses - Topic Overview
A healthy body temperature is maintained by the nervous system camera.gif. As the body temperature increases, the body tries to maintain its normal temperature by transferring heat. Sweating and blood flow to the skin (thermoregulation) help us keep our bodies cool. A heat-related illness occurs when our bodies can no longer transfer enough heat to keep us cool.
http://www.webmd.com/first-aid/tc/heat-related-illnesses-topic-overview#1
