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Reply #22: It would depend on your activity, the humidity and the temperature [View All]

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FarCenter Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Oct-24-11 01:23 PM
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22. It would depend on your activity, the humidity and the temperature
Even resting, you produce heat due to the basal metabolism which is burning 1200 to 2000 calories per day (depending mostly on weight) to keep your tissues alive. If you are using your muscles, additional heat is produced, but not a whole lot unless you are exercising vigorously.

This heat has to be gotten rid of by the body, primarily through the skin. As the temperature rises, you sweat in order to cool the skin by evaporative cooling.

The dew point is the temperature below which an object will fog up through condensation of humidity from the air.

If the dew point gets to body temperature of 98.6, the sweat will not evaporate from your skin and your body can't cool itself.

The Colorado State University has a calculator that you can use to determine what combinations of temperature and humidity produce a dew point of 98.6. http://einstein.atmos.colostate.edu/~mcnoldy/Humidity.h...

For example, if we set dew point to 98.6 and humidity to 50%, the temperature is 122.65. A humidity of 75% gives 108.31.
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