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Your body collaborates with you to prevent overheating. Curious about how it works? Explore more men's health visuals.
iStockphoto.com/alephx01Your body features a highly effective cooling mechanism: 2.6 million sweat glands spread across almost every part of your body, supported by an extensive network of ducts. You can generate up to 6 pints (3 liters) of sweat per hour, though most people max out at 2 pints (1 liter) unless they reside in a hot climate. This is beneficial when you're overheated but less ideal when heading to a job interview across a parking lot.
Physical activity and high temperatures can trigger sweating, but so can emotions like fear, excitement, and anxiety. Additionally, some individuals naturally sweat more than others. (Those who sweat excessively may suffer from hyperhidrosis, a genetic condition leading to abnormal perspiration.)
But what exactly is sweat? And why does it cause us to emit distinct odors?
After a workout, if you lick the back of your hand, you'll notice a salty taste. Sodium, chloride, and potassium are the primary components of sweat. These elements are transported to the skin's surface by water secreted from your sweat glands, leaving the salt behind once the liquid evaporates.
This combination of elements is what the majority of your sweat glands secrete. There are two types of sweat glands: eccrine glands, which are spread across most of your body and release a watery mixture, and apocrine glands, which produce a denser, plasma-like fluid. Apocrine glands are found in areas rich in hair follicles, such as the scalp, underarms, and genital regions. Their secretion includes the usual components plus fatty acids and protein byproducts like urea and ammonia.
Interestingly, sweat itself is odorless. The unpleasant smell arises when bacteria on your skin interact with the sweat from apocrine glands.
Moreover, sweat might contain a component that aids in combating infections. According to the British Journal of Medicine, German researchers identified a natural antibiotic in sweat called dermcidin, which could help eliminate bacteria and viruses on the skin's surface [source: Josefson].
What other benefits does sweat offer? Explore a variety of articles on this subject on the following page.
