Heat exhaustion and heat stroke can develop when temperatures are high and fluid intake is inadequate.

Anyone working or exercising in a hot environment – especially if they are not accustomed to it – can be affected. The older you are, the higher your risk of heat exhaustion. Also, those with high blood pressure are more prone to have trouble.

The symptoms of heat exhaustion include:

? muscle cramps in the abdomen, arm or legs

? heavy sweating

? pale, cool, moist skin

? a fast, weak pulse

? fast, shallow breathing

? feeling tired, weak and/or dizzy

? headache

? nausea or vomiting

? fainting.

If you recognize these symptoms in yourself or others, cooling down and drinking plenty of cool, nonalcoholic fluids is essential. Rest in the shade and take off extra clothing. Sponge down or splash cool water over your body. The symptoms should not last more than an hour.