What are the health benefits of sunbathing? Pray for the great gods.

Not only the photosynthesis of plants can not be separated from sunlight, but also the metabolism of human body is affected by sunlight, so sunbathing is good for human health. Sunlight irradiation can promote blood circulation of human skin, accelerate skin metabolism and regulate human immune function. Patients with psoriasis and rheumatoid arthritis get more sunshine, which will have a good adjuvant treatment effect. Sunlight can also promote the production of melanin in the skin and enhance the skin's resistance to ultraviolet rays. Most importantly, sunbathing can promote the skin to synthesize vitamin D3. Vitamin D3 can promote calcium absorption and bone formation. If vitamin D3 is insufficient, it will increase the possibility of rickets and other diseases. Besides, sunshine can make people feel happy. Sunlight exposure can change the content of some signal substances in the human brain, which makes people feel high and willing to engage in challenging activities. Sunbathing in winter is also a trick! Sunbathing in winter is of great benefit to increase the blood circulation of human skin and viscera and improve hematopoietic function. Especially in preventing and treating rickets in children and osteoporosis in adults, it has special curative effect. But unscientific sunbathing can also bring harm to the body. There are two periods of the day that are most suitable for sunbathing. The first section is from 6 am to 10. At this time, the infrared ray is at the peak, and the ultraviolet ray is low, which makes people feel warm and soft, and can play the role of promoting blood circulation and removing blood stasis. The second stage is at 4-5 pm, when the A-beam of ultraviolet rays is prevalent, which can promote the absorption of calcium and phosphorus in the intestine, help to enhance physical fitness and promote normal calcification of bones. No matter what season it is, it is forbidden to stay in the sun for a long time between 10 and 4: 00 pm, especially between 12 and 4: 00 pm, because the ultraviolet rays in the sun are R and B beams at this time, which will cause harm to the skin. In addition, from the measurement concept, staying in the sun for not less than 30-60 minutes every day can balance yin and yang. It is best to wear red clothes in the sun, then white clothes, and it is forbidden to wear black.