Heat, anxiety or physical exertion: if a person is required, sweat inevitably breaks out. Two to three million sweat glands are distributed in the skin and - even with complete rest and in a uniform climate - daily between half a liter and a liter of sweat off. The density of the sweat glands on the soles of the feet is highest with 620 glands per cm2, and lowest on the lower legs with about 120 glands per cm2.
In the sweat of the brow
The main task of sweating is the cooling of our body. But also to combat harmful germs or to build up the acid mantle of the skin makes the secretion of the sweat glands valuable services. Incidentally, sweat consists of 99% odorless water. That the sweat sometimes smells, is due to hundreds of metabolic products such as sex hormones, fatty acids and many other microorganisms. They transform the odorless substances into fragrances.
- Cooling: If sweat evaporates, heat is removed from the skin and the blood vessels in it.
- Mineral balance: When sweating man exudes saline, but also substances such as calcium and magnesium.
- Immune defense: Certain immunoglobulins in the gland secretion fight harmful germs and neutralize their toxins.
- Acid protection mantle: Sweat creates an acidic environment on the skin (pH value around 5). It inhibits the growth of microbes.
- Fragrance production: In addition to the actual sweat glands sitting on the hair roots special scent glands. But they especially from emotional excitement such as anger or anxiety from odors.