Question 2: Is there a benefit to sunbathing, or a disadvantage? Why? _? 20 points of modern medicine has confirmed that winter sunshine on the human skin and internal organs to increase blood circulation, improve hematopoietic function, regulate the central nervous system, increase phagocytosis vitality, enhance the metabolism of all parts of the human body and immune function are very beneficial. Especially in the prevention and treatment of rickets in children and adult osteomalacia, has a special efficacy.
But the sun should be scientific. Winter day, there are three periods of time most suitable for sunbathing. The first section is 6-9 a.m., when infrared rays prevail, ultraviolet light is low, so that people feel warm and soft, can play a role in blood circulation. The second and third sections are 9-10 a.m. and 16-17 p.m., when the ultraviolet A beams prevail, can promote intestinal calcium and phosphorus absorption, is conducive to strengthening the body, and promote the normal calcification of bones.
It is especially important to point out that, regardless of the season, between 10 a.m. and 16 p.m., especially between 12 noon and 14 p.m. This period of time, the most avoid prolonged sun exposure. Because at this time the sun's ultraviolet rays are B beams and C beams prevail, it will cause damage to the skin, but also can cause a variety of diseases.
In addition, the sun every day not less than 30-60 minutes, can balance the yin and yang. Sun best wear red clothing, because the red clothing radiation long wave can quickly "eat" off the killing power of the short-wave ultraviolet; the second choice of white clothing, contraindicated black clothing.
Question 3: What are the benefits and disadvantages of sunbathing Benefits of sunbathing:
1, sunbathing can prevent skin diseases. The skin is properly exposed to ultraviolet radiation, which can effectively kill the bacteria on the skin and increase the resistance of the skin.
2, sunbathing can enhance the body's immune function, increase phagocyte vitality. The ultraviolet rays of the sun have a strong bactericidal ability, general bacteria and some viruses in the sun half an hour or a few hours, will be killed.
3, sunlight in the mediation of human life rhythm and psychological aspects also have a certain role.
4, the sun can promote the body's blood circulation, enhance the body's metabolism, regulate the central nervous system, so that the body feels comfortable and stretch.
5, the sun's ultraviolet rays can also *** bone marrow production of red blood cells, improve hematopoietic function, thus preventing anemia.
The bad:
1, easy to lead to black skin.
2. Too much sun exposure can easily lead to skin cancer.
3, excessive ultraviolet radiation will make people unresponsive. Guess which net for you
Question 4: often sun exposure to the body what bad thing Ensure enough sun exposure, can promote subcutaneous lipids, transformed into vitamin D3. maintain the body's calcium limbs in metabolism. Exposure to the sun is mainly afraid of ultraviolet rays lead to cell mutation, triggering skin cancer. Hope to adopt thank
Question 5: the benefits and disadvantages of indoor sun exposure Sun exposure can slow down the aging process, which plays a role in vitamin D. Studies have shown that higher levels of vitamin D in the body than those with lower levels of vitamin D, on average, the body is about 5 years younger. The body relies on sun exposure for 90% of its vitamin D needs. The skin produces vitamin D3 through the ultraviolet rays of the sun, and the body converts it into active vitamin D. This type of vitamin helps promote the absorption of calcium and phosphorus, and promotes the formation of bones, which is why vitamin D is known as the "sunshine vitamin".
Sun exposure
Benefits of sun exposure
According to research, every square centimeter of skin exposed to sunlight for 3 hours can produce about 20 international units of vitamin D. Even if a baby is wrapped in tight clothes, as long as the face is exposed to the sun for one hour a day, it can produce 400 international units of vitamin D. Nearly the baby's entire daily vitamin D needs.
The sun can help the body get vitamin D, which is the main source of vitamin D in the human body. Vitamin D is also known as the "sunshine vitamin", the human skin contained in the vitamin D3 source of ultraviolet rays of the sun through the acquisition of manufacturing, converted into vitamin D, which can help the human body intake and absorption of calcium, phosphorus, so that the children's bones to grow strong and sturdy. For infants cartilage and rickets have preventive effect. For adults to prevent osteoporosis, rheumatoid arthritis and other effects.
? Sun exposure can prevent skin diseases. Proper exposure of the skin to ultraviolet radiation can effectively kill bacteria on the skin and increase the resistance of the skin.
? Sun exposure can also enhance the body's immune function and increase phagocyte vitality. The ultraviolet rays of the sun have a strong bactericidal ability, and general bacteria and certain viruses will be killed after half an hour or several hours in the sun.
? Sunlight also plays a role in mediating the body's vital rhythms as well as psychological aspects. Sunlight can promote blood circulation, enhance the body's metabolism, and regulate the central nervous system, thus making the body feel comfortable and relaxed.
? Sun exposure can increase the level of male androgen, enhance ***, improve the quality of ***. This is because the level of testosterone within the human bloodstream rises with the increase in vitamin D content in the body. The study also reconfirmed that 1 hour of sun exposure per day, testosterone in the human body can increase by 69%.
? The ultraviolet rays of the sun can also *** bone marrow to produce red blood cells, improve hematopoietic function, thus preventing anemia.
The best time for sunbathing
6:00 am to 10:00 am this time is the most suitable for sunbathing. At this time the sun's infrared light is strong, ultraviolet light is weak, can play the role of blood circulation; then 4:00 pm to 5:00 pm is also the best time to sunbathe, can promote the intestinal absorption of calcium and phosphorus, enhance physical fitness, and promote the normal calcification of bones. But the summer sunshine time is longer, 4-5 pm is the time of the heat wave, sunshine time can be pushed back a little bit.
These are just for the general public, excluding pregnant women, children and the elderly, these special groups of calcium needs more, the sun also needs to be more careful.
Pregnant women:
Need to bear the burden of two people on the need for calcium. In summer, half an hour of sunshine a day is enough, and in winter, no less than one hour a day. You can't stay indoors all day just because you can't move around.
Children: The need for development makes them need a lot of calcium, and is the most vulnerable to calcium deficiency. So from two months, you should be outdoors in the sun every day. The morning 9 ~ 10 o'clock, 4 ~ 5 o'clock in the afternoon is suitable time to go out. The time of receiving sunlight can be gradually extended from the first ten minutes to one hour. When the weather is not too hot, you can bask in the sun for a while and stay in the shade for a while. In the summer, do not directly in the sun, because the shade of the tree under the same can receive scattered ultraviolet radiation.
The elderly: the same is the focus of calcium. You can sunbathe before 9 a.m. and after 4 p.m., but it's best not to go out alone in the sun, if you fall asleep in the cozy sun, you may get cold. Get a few companions and chat while moving around, you can easily receive UV radiation.
In the winter due to the seasonal weakness of the ozone layer, the ultraviolet rays in the sunlight are strengthened, easy to bring different damages to the human body. Therefore, in the winter sunshine should also pay attention to the scientific selection of time. According to scientific research, in winter, there are three time periods more suitable for sunbathing:
? The first stage for the morning 6 ~ 9 o'clock, this time period of sunlight to warm and soft infrared peak, ultraviolet is relatively weak. Infrared temperature is higher, the human body mainly plays a warm role, can make the body heat, promote blood circulation and metabolism, enhance human vitality.
? The second and third phases are 9 to 10 a.m., and 4 to 5 p.m., respectively, the irradiation of these two time periods is characterized by more A-beam components in the ultraviolet ray,...... >>
Question 6: What are the benefits and disadvantages of frequent sun exposure Modern medicine has confirmed that winter sun exposure on the increase of blood circulation in human skin and internal organs, improve hematopoietic function, regulate the central nervous system, increase phagocytosis vitality, and enhance the metabolism of all parts of the human body and immune function are very beneficial. Especially in the prevention and treatment of rickets in children and adult osteomalacia, has a special efficacy.
But the sun should be scientific. Winter day, there are three periods of time most suitable for sunbathing. The first section is 6-9 a.m., when infrared rays prevail, ultraviolet light is low, so that people feel warm and soft, can play a role in blood circulation. The second and third sections are 9-10 a.m. and 16-17 p.m., when the ultraviolet A beams prevail, can promote intestinal calcium and phosphorus absorption, is conducive to strengthening the body, and promote the normal calcification of bones.
It is especially important to point out that, regardless of the season, between 10 a.m. and 16 p.m., especially between 12 noon and 14 p.m. This period, the most avoid long sunshine. Because at this time the sun's ultraviolet rays are B beams and C beams prevail, it will cause damage to the skin, but also can cause a variety of diseases.
In addition, the sun every day not less than 30-60 minutes, can balance the yin and yang. Sun best wear red clothing, because the red clothing radiation long wave can quickly "eat" off the killing power of the short-wave ultraviolet; the second choice of white clothing, contraindicated black clothing.
Question 7: What are the benefits and disadvantages of sunbathing? The benefits of sunshine
1, to prevent myopia
A study by the Australian National University pointed out that the lack of sunlight exposure may be one of the causes of myopia. Researchers analyzed that sunlight can *** dopamine generation, and dopamine can help avoid the eye axis lengthening, which in turn prevents the light into the eyes in the focus of the focus distortion. Therefore, more sunshine, more outdoor activities, can help "nerds" to reduce the risk of myopia.
2, reduce colds
A study by the Yale University School of Medicine found that frequent sun exposure can help reduce the risk of influenza virus and other common respiratory diseases. The researchers concluded that by maintaining high levels of vitamin D in the body, problems such as sore throats, common colds and nasal congestion can be better prevented. People who live in sunny areas are less likely to get the flu virus than those who get less sunlight.
3, healthier blood vessels
A study published in the British Medical Journal found that people with low levels of vitamin D have a higher risk of heart disease, heart failure and stroke. A number of studies have also confirmed that during the winter months, when UV rays are more scarce, the number of patients suffering from myocardial infarction increases significantly. Proper sun exposure helps vitamin D become more active, which leads to less inflammation in the body and better vascular health.
4, prolong life
From 1980, Danish researchers on the 4.4 million Danish people conducted a 26-year study found that more sunshine can extend life. The Danish Cancer Institute's Inge Henschop? Clemensen also believes that those who often sunbathe in the sun, than always stay at home or the office, more often to the outdoors, which is also an important reason for health benefits.
5, enhance hormone levels
One of the most inexpensive natural "Viagra" may be more sunshine. Researchers at the Medical University of Graz in Austria found that the level of testosterone in the body changes with fluctuations in vitamin D levels. Every year after the fall, the body's vitamin D and testosterone levels will be synchronized decline, and in the following year in March to the lowest. This has to do with the fact that people get less sunlight. The study also said that an hour of sunshine a day, the body testosterone can increase by 69%.
The bad side of the sun:
1, just a little bit of sun every day, enough to cope with our body's need to make vitamin D. The sun is not the only thing that can make you feel better. Too much sun exposure is likely to have a negative effect on the skin. Wrinkles, dark spots, skin aging, etc. are the long-term effects of ultraviolet radiation on our skin, and these are cumulative "irreversible" damage.
2, in the sun or sun exposure time is too long prone to various types of skin diseases caused by sun exposure, such as sunburn, polymorphic sun rash, increase the chances of skin cancer. Therefore, it is best to apply a high sun protection index sunscreen or parasol, wear a wide-brimmed hat, sunglasses, wear long-sleeved, etc. long time outdoors.
Question 8: How many bad things does exposure to the sun do to the skin? 1. Skin redness, skin inflammation, skin peeling, skin tanning , fine lines, showing aging;
2. The main cause of sunburn is the excessive ultraviolet light so that the subcutaneous microvascular expansion, the blood are brought to the surface, like a fever like redness, heat. The temperature of the skin will then be accelerated into an inflammatory reaction;
Skin inflammation:
If you have enough sun protection measures, in the sun after half a day to a day's time, the skin in addition to redness, heat, there will be a swollen, painful reaction, it is already inflamed, keep in mind that the skin to reduce the pain of the skin to reduce the sense of pain, if not dealt with is likely to be accompanied by the peeling of the skin, the same as a "one-time burn". "
Skin peeling:
Skin red and then black, on behalf of the epidermal cells have died, about 2 to 4 days will go through the natural metabolism, peeling out of the new skin, the most important thing is to replenish the water, the cuticle is healthy, and will not be off to the skin. The most important thing to do is to make sure that the skin is healthy, so that it doesn't come out of the skin, so that you can be patient and strengthen the moisturizing, so that you can save the dehydrated state, so that the fragile skin can be stabilized after sunbathing. Do not think that exfoliation and whitening can make the dark complexion better, this time the more care the more *** skin. After a week of sun exposure, wait until the peeling lifts before you start whitening.
The appearance of fine lines, showing aging:
After the sun exposure, the face supported by a variety of anti-aging skincare products is back to the original type, lines all out. It turns out that the ultraviolet rays of the sun will destroy the skin's organization, slowing down the skin's metabolic rate, so that the dead skin accumulates in the epidermis for a longer period of time.