Why is sweat salty

Sweat is a liquid secreted by the body's skin. It is secreted from the sweat glands under the skin. It is a cooling phenomenon that occurs when the body encounters high temperatures. Sweating can promptly discharge heat from the body and prevent overheating, etc. The taste of sweat is salty, which makes many people feel very confused. Let's take a look at why sweat is salty? I hope everyone can understand it.

Because sweat contains sodium chloride, which is the main component of table salt, and salt tastes salty, so sweat tastes salty. Composition of sweat: 98-99% of the composition is mainly water, its specific gravity is approximately between 1.002 and 1.003, and its pH value is 4.2 to 7.5. Sodium chloride is about 300 mg/100 ml. 1-2% is a small amount of urea, lactic acid, fatty acid, etc.

Sweat components can be divided into two categories: inorganic components and organic components, both of which are metabolic products in the body. The inorganic components are mainly salts such as sodium chloride and calcium carbonate, some of which are acidic and some are alkaline. Excessive accumulation of these acidic and alkaline components will directly corrode the skin, destroy the skin's tissue cells, and cause skin aging.

The accumulation of organic components in sweat on the body surface, driven by high temperature weather, will facilitate the reproduction of microorganisms on the body surface. Excessive sweating will also produce sweat odor.

Sweating can be divided into active and passive types. The so-called passive sweating refers to sweating caused by hot weather and irritable mood. This type of sweating is a physiological activity in which the human body removes heat from the body through evaporation of water to keep the body temperature within the normal range.

On the contrary, sweating caused by active exercise is called active sweating, which helps maintain the body's temperature and dissipates heat. It has the same function as passive sweating and can also take away a small amount of body waste produced by exercise.

The function of sweat is to regulate body temperature. If you think about it carefully, the human body is really like a precision machine. If you don't sweat, you're out of luck. When you exercise, your blood circulation speeds up and your body temperature rises, so you will naturally sweat and lower your body temperature. When the weather gets cold, your sweat glands and pores will contract and you will stop sweating, thus preventing the loss of body temperature.