1, the health benefits of hot water
Su Dongpo said: "The hot foot bath method didn't work at first, but accumulated for more than a hundred days, and its effect was immeasurable. It is a hundred times more effective than taking medicine. " In fact, the health benefits of hot water don't stop there.
1. Promote blood circulation: The warming effect of water can dilate human blood vessels and accelerate blood flow, thus promoting blood circulation throughout the body and achieving the effect of warming yang and benefiting the body. Studies have shown that the whole body blood flow will increase by 10~ 18 times after healthy people soak their feet with water at 40℃~45℃ for half an hour.
2. Accelerate metabolism: Warming can stimulate the secretion of human hormones, such as thyroid and adrenal hormones, thus improving the metabolic capacity of the human body and making the garbage and toxins in the body better excreted. Li Fangling said that especially when the skin temperature rises and the body sweats slightly, it is more conducive to the discharge of toxins.
3. Consume body calories: Taking a hot bath can relax the body and mind, restore muscle elasticity and consume a lot of calories. A recent study by Loughborough University in the United Kingdom found that taking a bath 1 hour consumes the same amount of heat as walking for half an hour, and taking a hot bath often helps to prevent diabetes.
4. Enhance respiratory function: Drinking boiled water can relieve the tension of respiratory mucosa and promote expectoration, which is very effective for cough caused by cold. In addition, inhaling water vapor is beneficial to keep the mucous membrane of oral cavity and nasal cavity moist, which can not only prevent the invasion of cold virus, but also help to remove mucus from the lungs.
5. Eliminate brain fatigue: When certain "deposits" are accumulated in the body, people will feel tired. Taking a hot bath and drinking boiled water can speed up the blood circulation, reduce the substances that make people feel tired in the blood, improve the blood supply to the brain, and at the same time inhibit the excitement of the central nervous system of the cerebral cortex, so that the brain is at rest.
6. Relieve local pain: Chinese medicine believes that "warming is good, and general rules do not hurt". Jiang Liangduo said that hot compress and other methods can increase the blood supply to injured tissues and relieve local pain. For example, applying a towel to dysmenorrhea can promote blood circulation, remove blood stasis, regulate qi and relieve pain.
7. Reduce the incidence: soaking feet has a health care effect on all organs of the body. Foot three yin is related to liver, spleen and kidney, and foot three yang is related to gallbladder, bladder and stomach. Strengthening the blood circulation of the foot by warming is beneficial to refreshing the mind and preventing diseases.
8. Improve communication skills: A study by Albert Einstein College of Medicine in the United States found that bathing in water at 39℃ can improve the communication skills of autistic patients. People who live in a milder environment have stronger communication skills, more active immune systems and stronger resistance to diseases.
I believe everyone knows the benefits of hot water health preservation mentioned above. What are you waiting for? You are too tired from work. Try soaking your feet in hot water to relieve fatigue!
2. Disadvantages of hot water bath
pruritus cutanea
After bathing, the skin is particularly dry and itchy, with dandruff, fine lines and roughness. In addition to the dry and cold environment in winter, taking a hot bath is a big reason.
1. If the water temperature is too high, sebum will be more soluble in water. Sebum can reduce skin moisture loss and prevent external bacteria. High water temperature makes the skin surface lose its protective film, and dryness, itching and allergies follow. Especially washing your hair at high water temperature is easy to aggravate dandruff.
2. Bathing is too diligent. Frequent bathing and rubbing will not only cause sebum to be washed off, but also excessively remove the stratum corneum, making the skin more sensitive, dry and itchy.
Increase the risk of male infertility
The water temperature in a hot bath is generally 38-43℃, and the water temperature in a sauna is even higher. Men often take sitz baths outdoors, which will reduce the sperm vitality of men and increase the risk of infertility and deformity. In addition, according to the network data, the sperm density dropped to100000 /ml after soaking in the water temperature of 43-44℃ for 20 minutes for three consecutive days, while the normal value was above150000 /ml.
Cough and dyspnea, but not caused by a cold.
Symptoms such as cough, fatigue, fever, dyspnea and sweating at night are very similar to tuberculosis. In fact, this is caused by taking a bath in a domestic bathtub for a long time, which is also commonly known as "hot basin lung".
The reason is that there are a large number of Mycobacterium avium in bathtubs and shower heads, which can enter the lungs through breathing during bathing.
fall into a faint
Dizziness when taking a hot bath, commonly known as "dizzy hall", is mainly due to the high humidity, high temperature, insufficient oxygen and fast blood circulation in the bathroom, which leads to insufficient oxygen supply to the brain and symptoms such as dyspnea, nausea and dizziness.
Although this phenomenon can be solved by breathing fresh air, it is easy to induce hypotension, insufficient blood supply to the heart and brain, and then sudden death and stroke.
In addition, germs such as sexually transmitted diseases, AIDS and hepatitis are not easy to be infected in public toilets unless there is a lot of bleeding and there is an open wound. Therefore, taking a hot bath in winter is comfortable, but it should be moderate and temperate.