When does the spring sun bask in calcium in the morning?
Sunbathing in spring and summer, if you master it right, you will have the skills to lose weight and sterilize.
Can prevent depression
Spring is a season of frequent depression. Experts suggest that people can often go outdoors to bask in the sun, which is good for driving away depression.
Experts explained that sunlight will cause a series of physiological changes, such as the thermal effect of infrared rays will expand capillaries and accelerate blood circulation; Ultraviolet rays can oxidize melanin, increase vitamin D and histamine in skin, increase gastric acid secretion, and increase the contents of hemoglobin, calcium, phosphorus and magnesium in blood.
In addition, under sufficient sunlight, the secretion levels of adrenaline, thyroxine and gonad will be improved, thus effectively improving the negative psychology such as depression and mental depression.
Can prevent osteoporosis
Adequate light will play a key role in the production of vitamin D and the absorption of calcium. Once vitamin D is deficient, the human body will not absorb enough calcium, and the human bones will become very fragile. If you are not careful, you will break a bone, such as bending over and jumping. Some osteoporosis, even if it has not reached the level of fracture, will produce persistent pain, which greatly affects people's quality of life.
Helps to sterilize.
Ultraviolet rays in sunlight are a natural disinfectant, which can kill pathogens of various respiratory infectious diseases, such as influenza virus, measles virus and meningococcus.
The results showed that typhoid and mycobacterium tuberculosis could be killed for several hours, pertussis could be killed 1 hour and Shigella dysenteriae could be killed for 30 minutes under direct sunlight. Experts suggest that citizens can get more sunshine in winter and spring, especially patients with allergic rhinitis, rheumatoid arthritis and bronchial asthma.
Helps reduce "winter fat"
American experts advise people who want to lose their "winter weight" to get more sunshine.
It is understood that less sunshine will stimulate people's desire for high-calorie food, because the synthesis of serotonin (a hormone that helps to improve mood and suppress appetite) will decrease with less sunshine, making people feel depressed easily, and their appetite will double, and even suffer from a disease called "seasonal depression" (SAD) in severe cases. According to statistics, about10 million people suffer from this disease every winter in the world, and its cure includes half an hour of light every day.
At least 20 minutes a day.
How much sun is suitable for everyone a day? The Ministry of Health organized experts to compile the Essentials of Prevention and Treatment of Osteoporosis, and proposed that at least 20 minutes of sunshine every day can meet the needs of the human body. Because ultraviolet radiation in the sun promotes the high efficiency of synthesizing vitamin D, for people without skin problems, about 30 minutes in the sun every day can synthesize about 20,000 international units of vitamin D needed by the human body.
There are two periods in a day that are most suitable.
There are two periods in a day that are most suitable for sunbathing: the first period is 6:00- 10 in the morning, when the infrared ray peaks and the ultraviolet ray is low, which makes people feel warm and soft and can promote blood circulation and remove blood stasis; The second stage is from 4 pm to 5 pm. At this time, the A-beam of ultraviolet rays has the upper hand, which can promote the absorption of calcium and phosphorus in the intestine, which is conducive to strengthening physical fitness and promoting normal calcification of bones.