Promote blood circulation
The infrared rays in sunlight can penetrate the skin and reach the subcutaneous tissue, which plays a role in keeping warm, dilating blood vessels and promoting blood circulation and metabolism of the whole body. In winter, the weather is cold, the blood circulation is slow, and the body is not easy to warm. Sunbathing can increase the blood circulation of human skin and viscera and improve hematopoietic function.
Enhance immunity
Sunbathing in winter is very helpful to enhance human metabolism and immunity. According to experts, as long as you keep sunbathing for about 30 minutes every day in winter, you can detect 0.25 mg of vitamin D3 in your blood, and this vitamin can double your immunity with only 0.09 mg every day. In addition, the strong sterilization ability of ultraviolet rays also makes the bacteria and viruses in the body be eliminated one by one, reducing the occurrence of epidemics.
Prevention of osteoporosis
Sunbathing can supplement the body with rich vitamin D. The main sources of vitamin D are sunbathing and exercise. It can promote intestinal absorption of calcium and phosphorus, enhance the protection of bones, promote the growth and development of bones, prevent osteoporosis and arthritis, and prevent rickets and promote growth for minors.
Prevention of anemia
Ultraviolet rays in sunlight can stimulate bone marrow to produce red blood cells and improve hematopoietic function, thus preventing anemia. Sunbathing can promote blood circulation, enhance metabolism and regulate the central nervous system, thus making people feel relaxed and comfortable.
Prevention of dermatosis
Visible light and infrared rays in sunlight can stimulate skin tissue warmly, improve the nutritional status of skin tissue, and thus achieve analgesic and anti-inflammatory effects. When the skin is irradiated by proper ultraviolet rays, it can effectively kill bacteria on the skin, enhance skin resistance and reduce the occurrence of skin diseases. However, people suffering from solar dermatitis and allergic to ultraviolet rays should not bask in the sun.
desensitize
It is a good health care method to bask in the sun often in winter. Because ultraviolet radiation has desensitization effect, patients with allergic rhinitis and bronchial asthma can have a good relief effect by sunbathing in winter.
The best time to bask in the sun in winter
Sunbathing in winter should be from 8: 00 am to 9: 00 am, when the sun is warm, mainly infrared rays, which have the functions of warming the body, promoting blood circulation and removing blood stasis; At 9- 10, the ultraviolet A beam is enhanced, which is a good opportunity to absorb vitamin D. It is not suitable to bask in the sun from noon 10 to 4 pm. The ultraviolet beam at this time is harmful to the skin and not suitable for sunbathing.