The human body can tolerate only a small range of temperature, especially when the person is engaged in vigorous activity. Heat {#blank#}1{#/blank#} usually occur when large amounts of water and/or salt are lost through oversweating following exhausting exercise. When the body becomes overheated and cannot {#blank#}2{#/blank#} this overheatedness, heat exhaustion and heat stroke are possible.

    Heat exhaustion is generally {#blank#}3{#/blank#} by sweaty skin, tiredness, sickness, dizziness, plentiful sweating, and sometimes fainting, resulting from a(n) {#blank#}4{#/blank#} intake of water and the loss of fluids.  First aid treatment for this condition includes having the victim lie down, {#blank#}5{#/blank#} the feet 8 to 12 inches, applying cool, wet cloths to the skin, and giving the victim sips of salt water (1 teaspoon per glass, half a glass every 15 minutes) over a 1-hour period.

    Heat stroke is much more serious; it is a(n) {#blank#}6{#/blank#} life-threatening situation. The characteristics of heat stroke are a high body temperature (which may reach 106° F or more); a rapid pulse; hot, dry skin; and a blocked sweating {#blank#}7{#/blank#}. Victims of this condition may be unconscious, and first-aid measures should be {#blank#}8{#/blank#} at quickly cooling the body. The victim should be placed in a tub of cold water or {#blank#}9{#/blank#} sponged with cool water until his or her temperature is sufficiently lowered. Fans or air conditioners will also help with the cooling {#blank#}10{#/blank#}. Care should be taken, however, not to over-chill the victim once the temperature is below 102° F.