In sunny weather, many people want to go out for a walk. They are worried that ultraviolet radiation will cause skin problems. But you know what? In the view of Chinese medicine, there is indeed a trick of "back drying" that can enhance immunity and prevent diseases, but it will not hurt the body if you master the right method.

According to many ancient books, regardless of the east or the west, ancestors like to use sunlight to keep fit. From the perspective of traditional Chinese medicine, Yang is like the relationship between the sky and the sun. The sun is necessary for the sky to run, so is the human body. Both blood and body fluid need the auxiliary operation of yang to promote blood circulation and gasification, so that nutrients can move up and down and viscera can move freely, so as to be endless.

Sunbathing for health, ancient and modern, Chinese and foreign.

Chen Chaozong, honorary chairman of Taipei Chinese Medicine Association, pointed out that more than 80% of modern people generally lack yang because they have been hiding from the sun for a long time. If the human body's yang is insufficient, the most obvious symptom is excessive moisture, which is easy to cause imbalance between yin and yang in the body and cause chronic diseases.

The ancient Chinese medicine book "Su Wen Nu Tian" pointed out: "Yin people, hide essence, ascend to the extreme; Yang, keeping the outside is also solid. It shows that Yang is the source of energy and the auxiliary device of all functional activities, which can not only realize the guardian function, but also care for the essence. Chen Chaozong explained that "defending qi" mentioned by Yang Qi in Chinese medicine means guarding, which means protecting. Yang Qi can resist foreign evils and ensure human safety. Therefore, as long as the human body has enough Yang Qi, it can resist virus invasion, which also means that "maintaining Yang Qi is the foundation of health preservation and treatment".

In fact, it is recorded not only in ancient books in China, but also in ancient Greece. This is also the purpose of sunbathing city, which mainly uses ultraviolet rays to treat tuberculosis. Up to now, many westerners still like sunbathing on the beach, but the way and time of sunbathing must be limited to achieve the effect of not harming their health.

There are many acupoints on the shoulder and back, and warming the back can make the whole body unobstructed.

Cao Tingdong, a health expert in Qing Dynasty, mentioned in his monograph "Old Heng Yan" that regular exposure to the sun, especially the warmth of the back, can make the whole body harmonious and comfortable. This statement coincides with Chen Chaozong's advocacy that drying the back helps the sun be the spirit to reach the whole body.

Chen Chaozong pointed out that there is a meridian on the back, which is the du meridian. The three Yang meridians of the hands and feet intersect with the du meridian, which will connect the spine and the brain. In addition, the back Shu points of the bladder meridian of Foot Taiyang are distributed in the internal organs, and these important points are concentrated in the back. Therefore, back drying has become one of the most important health preserving methods. "Especially people with cold hands and feet and gastrointestinal discomfort can get rid of the cold of the spleen and stomach by drying their backs and help improve their digestive function. 」

Even drying the back can dredge the back meridians. For middle-aged and elderly people suffering from chronic diseases such as pneumonia, chronic bronchitis, asthma, hypertension and cardiovascular diseases, if they lie on their backs in the sun at an appropriate time, Yang Can will be delivered to the whole body through the relevant acupoints on the shoulder and back, thus achieving the effects of enhancing immunity and preventing and treating diseases.

Proper back drying has a good effect and does not hurt the body.

However, in modern people's minds, the toxicity of the sun is prohibitive, and they are more worried about skin cancer caused by excessive ultraviolet radiation. Chen Chaozong advocated "warm back" health preservation. The best way is to contact the sun for 20 to 30 minutes every day, especially from 6 am to 10. Or you can choose from 4 pm to 5 pm, when the ultraviolet rays are low. "As long as you know how to master the good opportunity of sunbathing, you can not only strengthen your body, promote blood circulation and remove blood stasis, but also promote the absorption of calcium and phosphorus and prevent osteoporosis. 」