Our bodies create a tremendous amount of internal heat. We
normally cool ourselves by sweating and radiating heat through
our skin. Under certain circumstances, such as unusually high
temperatures, high humidity, or vigorous exercise in hot
weather, this natural cooling system may begin to fail, allowing
internal heat to build up to dangerous levels. The result may be
heat illness, which can come in the form of heat cramps, heat
exhaustion, or heatstroke. Heat cramps are brief, severe cramps
in the muscles of the legs, arms, or abdomen that may occur
during or after vigorous exercise in extreme heat. The sweating
that occurs with vigorous exercise causes the body to lose salts
and fluids. And the low level of salts causes the muscles to
cramp. Children are particularly susceptible to heat cramps when
they haven't been drinking enough fluids. Although painful, heat
cramps aren't What to Do: Most heat cramps don't require special
treatment. A cool place, rest, and fluids should ease your
child's discomfort. Mas