What happens when the bodys core temperature rises?
The human body functions best within a narrow range of internal temperature. This core temperature varies from 36°C to 38°C. A construction worker performing heavy work in a hot environment builds up body heat. To get rid of excess heat, the body uses two cooling mechanisms: • The heart rate increases to move blood — and heat — from heart, lungs, and other vital organs to the skin. • Sweating increases to help cool blood and body. Sweating is the most important way the body gets rid of excess heat. When too much sweat is lost through heavy labour or working under hot, humid conditions, the body doesn’t have enough water left to cool itself. The result is dehydration. Core temperature rises above 38°C. A series of heat-related illnesses, or heat stress disorders, can then develop.
