Why do you sweat in summer?

Sweating is a common thing for us. When summer comes, we will sweat more and more frequently. There is a good reason why people sweat more in summer: heat. It is hot in summer, and depending on where people live, they may bear a lot of heat. But why does heat make people sweat? The human body is designed to keep its body temperature within a narrow temperature range between 33.2 and 38.2 degrees Celsius. When human beings are exposed to high temperature, their bodies must work to cool themselves and keep the internal temperature within a safe range. The main way for the human body to do this is through sweating. Sweat lowers body temperature together with body temperature. The ability of the human body to regulate the internal core temperature is called thermoregulation, and this process is the cause of sweating.

Sweating is the only automatic process that the body must cool itself, which is essential for survival. When people are exposed to high temperature, their bodies begin to sweat. The brain feels that the internal temperature of people begins to rise with the environment and activates the sympathetic nervous system. This is a branch of the nervous system that is responsible for activating automatic body functions, including? Fight or flight? Reaction. The sympathetic nervous system attaches to exocrine sweat glands by activating sympathetic cholinergic fibers of sweat glands. Exocrine sweat glands are distributed all over the body, where sweat is produced and pumped to the skin surface.

There is another kind of sweat gland called apocrine sweat gland, but they are not considered to be used for temperature regulation. When sweat glands are activated, vasodilation (vasodilation) begins, and sweat glands begin to absorb fluid from blood vessels and secrete it to the skin surface. Sweat is mostly composed of water. Once it touches the skin, it will quickly evaporate into the surrounding environment in the form of water vapor. When sweat leaves the skin, it takes away heat, which was in the body before, thus cooling the body. When the body cools down enough, the brain will send a signal to the sweat glands to stop producing sweat, and this process will stop. This is the normal cause of human sweating, and it is also a part of human existence in so many environments. Without the ability to sweat, summer will be more deadly.