1, hot water bath can clean skin and improve its disease resistance. There are millions of sweat gland openings on the human body surface, and the sweat discharged from the skin every day is about 1000mL. In strenuous activities or summer, you sweat more. There are sebaceous glands on the skin, which often secrete oily substances and mix with sweat and dust to form dirt. When dirt accumulates to a certain extent, it can block the opening of sweat glands, promote the growth of bacteria, and sometimes cause dermatoses such as sweat spots, folliculitis, furuncle, carbuncle and impetigo. Bathing with hot water can remove dirt from the skin, keep sweat glands unobstructed, and improve the metabolic function and disease resistance of the skin. The clean skin surface is acidic and can inhibit the growth of bacteria. Some people have done experiments, and taking a hot bath can remove tens of millions or even hundreds of millions of microorganisms from the skin. Therefore, hot water bath is called "disinfection hot bed".

2, hot bath can promote metabolism and eliminate fatigue. Hot water bath can improve the excitability of nervous system, lead to vasodilation, promote blood circulation and improve the nutritional status of tissues and organs. At the same time, it can also reduce muscle tension, relieve muscle spasm, relax muscles and eliminate fatigue. Lactic acid content in blood is a sign of fatigue. When the lactic acid content in the blood increases after work or exercise, people will feel tired. Taking a hot bath can speed up metabolism and increase the speed of decomposing lactic acid.

3. Hot water bath also has therapeutic effect. Clinically, it can be used to treat chronic diseases such as early cold, chronic arthritis and fracture healing. In addition, a hot bath has a calming effect. For people with poor sleep or frequent insomnia, bathing before going to bed can promote sleep and improve sleep quality.