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What's the use of sunshine?
Sunshine is more important for children, because they are growing and developing rapidly, and the development of bones plays an important supporting role for the whole body. Once the lack of sunlight makes the body form unable to get vitamin D, the child's development will definitely have serious problems.
3. Sunlight exposure to the skin will dilate subcutaneous blood vessels, increase blood flow, increase the excretion and resistance of toxic substances, increase the secretion of saliva and gastric juice, strengthen gastrointestinal peristalsis, and promote appetite and digestion.
4. the skin can also make some chemicals, such as ergot and cholesterol, into vitamin D. This vitamin, calcium and phosphorus are important components of our bones. Without them, we would get rickets.
Sunbathing can restore and maintain the health of miners who have been working underground for a long time, so sunbathing once became a fashion.
6. The ultraviolet rays in the sun have strong bactericidal ability. Ordinary bacteria and some viruses will be killed if they are exposed to the sun for half an hour or several hours.
The sun is very important to human beings. The circulation of the earth's atmosphere, the alternation of day and night with the four seasons, and the changes of the earth's temperature and warmth are all the results of the sun. For astronomers, the sun is the only star that can observe the surface details.
Above content reference: Baidu Encyclopedia-Sunshine
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