Heat, fear 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 in complete calm and in a uniform climate - daily between half a liter and one liter of sweat. 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 our body. However, the secretion of the sweat glands also serves to combat harmful germs or to build up the acidic protective coating of the skin valuable services. By the way: 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 excretes saline, but also substances such as calcium and magnesium.
- Immune system: Certain immunoglobulins in glandular secretions fight harmful germs and neutralize their toxins.
- Acid mantle: Sweat creates an acidic environment on the skin (ph value around 5). It inhibits the growth of microbes.
- Perfume Production: In addition to the actual sweat glands, there are special scent glands on the hair roots. But they especially from emotional excitement such as anger or anxiety from odors.