Sweat is produced from 2-4 million sweat glands in our body. They are found in the outer tissue of the skin. Their main concentration is on: arms, armpits, legs and groin.
Interestingly, although men sweat more, the concentration of foul-smelling, volatile carboxylic acids in their sweat is the same as that of women, it is just that men's sweat contains more water.
With every liter of sweat, about 540 kilocalories "fly away" from the skin, which makes it cooler and can cool the blood flowing through it.
The smell of a man's sweat is different from that of a woman's. This is due to the fact that the skin of women and men contains different types of microorganisms.
In healthy people, sweat glands secrete from 300 to 800 milliliters of sweat per day, and in heat and during physical activity - up to one and a half liters.
According to various researchers, hyperhidrosis (this is the medical name for excessive sweating) affects 1 to 15% of the world's population.
Asians have fewer pores than Europeans and Africans.
Interestingly, wet skin sweats less. This is due to the fact that the stratum corneum swells and the glands narrow. But this does not apply to the armpits.
Only by breathing are birds that have no sweat glands cooled, as well as cats and dogs, which have a small number of sweat glands only on the pads of their paws.
In children before puberty, sweat hardly smells.
Hippopotamus sweat contains a red and orange pigment that absorbs ultraviolet light and acts like sunscreen on its skin.
Human sweat is 90% water and odorless. The smell does not come from sweat, but from its combination with bacteria that live closer to the surface of the skin and on the skin.