When the body is no longer able to cool itself through sweating, heat stress or heat exhaustion can occur and, in more extreme instances, heat stroke.  Some factors contributing to heat exhaustion are direct exposure to sun, limited air movement, physical exertion often combined with poor physical shape, and an inability to tolerate warm climates.

Knowing the signs of heat exhaustion is very important.  If you feel faint or dizzy, experience weakness, have an upset stomach or are vomiting, or are irritable and foggy-headed, you may be suffering from heat exhaustion.  If your skin is dry and you are not sweating, you feel like you are losing consciousness, or are having seizures or convulsions, you may be suffering from heat stroke and should seek immediate medical attention.

The best way to prevent heat-related illnesses is to block out direct sunlight, use fans or air conditioners, rest regularly, wear lightweight clothing, avoid alcohol and caffeine, and drink water regularly.  In the recent hot temperatures, be sure you are taking care of yourself.  For more information, visit OSHA Reference Card.