All about perspiration > Why do we sweat?
Perspiration is your body's built-in cooling system protecting it from overheating.
Our bodies contain two to four million sweat glands. They are present over the entire body, with the highest density on the palms and the soles of the feet, as well as in the armpits.
To maintain your internal temperature of 98.6° F, sweat glands draw fluid from the bloodstream and pass the water to the skin to cool it. In addition to hot weather and exercise, spicy foods and emotions like fear and embarrassment produce sweat. By stimulating the production of adrenaline, they cause your heart and other organs to step up their activity, which stimulates heat and makes you sweat.
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