Heat exhaustion occurs when the body becomes dehydrated and is unable to regulate its internal body temperature.

The condition is not usually considered life-threatening and is treatable with fluids and rest. In this article, we look at the symptoms and treatment of heat exhaustion, as well as how to prevent it.

What is heat exhaustion?

man pouring water on himself after exercise
A combination of exercise and warm weather may cause heat exhaustion.

Normally, the body gets rid of excess internal heat by pumping blood to the surface of the skin and releasing sweat.

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