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- $Unique_ID{BRK02102}
- $Pretitle{}
- $Title{When and Why Sweat}
- $Subject{sweat sweats sweating sweaty work working hot heat metabolism
- calories temperature skin overheat overheated}
- $Volume{}
- $Log{}
-
- Copyright (c) 1993 Tribune Media Services, Inc.
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-
- When and Why Sweat
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- QUESTION: While working in my air conditioned basement, I suddenly noticed I
- had worked up a pretty good sweat. Then I thought that I also sweat when not
- working if I am in a hot place. That means it isn't the work that makes you
- sweat. Can you tell me what does? It may not be an important question but it
- did make me think.
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- ANSWER: The body, quite literally, is a heat producing organism. The heat is
- generated as the result of the body's metabolism, as it burns the calories
- contained in the nutrients we eat. While this energy is needed by muscles as
- we work, it is also required for such activities as digestion, manufacturing
- hormones and enzymes, as well as the muscles that control breathing and keep
- the heart pumping.
- However, the body works best when the internal body temperature remains
- around 98.8 degrees Fahrenheit or about 37 degrees Centigrade. And there is a
- mechanism within the brain that monitors the temperature of the body, and
- works a bit like a thermostat. When the internal temperature begins to rise,
- the blood flow is directed towards the surface of the skin, where the excess
- heat can be cast off into the surrounding air. That works well when the air
- temperature is lower than body temperature. However, when the air is warmer
- than the skin, another mechanism is used. We begin to sweat, and the moisture
- that covers our skin's surface evaporates, an excellent method for getting
- rid of the heat. So sweating is merely a heat loss mechanism, that is
- employed by the body whenever it needs to reduce its internal temperature,
- whether that has been caused by work, a fever provoked by an illness, or
- merely absorbing too much heat from the sun.
- You might also be interested in the interesting method the body uses when
- it is too cold. I am sure you have experienced shivering at one time or
- another. That results from rapid muscle contractions, and the that muscular
- action produces heat, as if from exercise. And that helps to restore the
- body's temperature to the normal level.
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-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-