BODY HEAT BALANCE
Ordinarily the body remains at a fairly constant temperature of 98.6°F. It is very important that this body temperature be main-tained and, since there is a continuous heat gain from internal body processes, there must also be a continuous loss to maintain body heat in balance. Excess heat must be absorbed by the surrounding air or lost by radiation. As the temperature and humidity of the environment vary, the human body automatically regulates the amount of heat it gives off. However, the body’s ability to adjust to varying environmental conditions is limited. Furthermore, although the body may adjust to a certain (limited) range of atmospheric conditions, it does so with a distinct feeling of discomfort. The following discussion will help you understand how atmospheric conditions affect the body’s ability to maintain a heat balance.
Body Heat Gains
The human body gains heat
(1) by radiation, (2)…
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