sunlight is not only an activator of vitamin D, but also one of the natural “health care drugs”. Sunbathing can cause a series of physiological changes, such as accelerating blood circulation, promoting the production of vitamin D and calcium absorption, preventing osteoporosis, and killing a variety of viruses and bacteria. In fact, in addition to these benefits, sunlight has many effects that you have not noticed.
8 benefits to keep in mind
prevention myopia a study by the Australian National University pointed out that lack of sunlight may be one of the causes of myopia. According to the analysis of researchers, sunlight can stimulate the production of dopamine, which can help avoid the lengthening of the eye axis, thus preventing the focus distortion of light entering the eye when it is focused. Therefore, more exposure to the sun and more outdoor activities can help “Bookworms” reduce the risk of myopia.
reduce colds a study by Yale University School of medicine in the United States found that frequent exposure to the sun helps reduce the harm of influenza virus and other common respiratory diseases. Researchers believe that maintaining a high level of vitamin D in the body can better prevent problems such as sore throat, common cold and stuffy nose. People living in sunny areas are less likely to be infected with the flu virus than those who are less exposed to the sun.
blood vessels are healthier a study published in the British Medical Journal found that people with low vitamin D content have a higher risk of heart disease, heart failure and stroke. Many studies have also confirmed that in winter, when ultraviolet rays are relatively scarce, the number of patients suffering from myocardial infarction will increase significantly. Proper exposure to the sun can help vitamin D become more active, thus reducing inflammation in the body, which is more beneficial to vascular health.
prolong life since 1980, Danish researchers have studied 4.4 million Danes for 26 years and found that more solar energy can prolong their life. Inge hensp clemensen of the Danish Cancer Research Institute also believes that those who often bask in the sun go outdoors more often than those who always stay at home or in the office, which is also an important reason for good health.
increase hormone level one of the cheapest natural “Viagra” may be to get more sun exposure. Researchers from Graz Medical University in Austria found that the level of testosterone in the body changes with the fluctuation of vitamin D content. After autumn every year, the levels of vitamin D and testosterone in the human body will decrease synchronously, and will drop to the lowest in March of the next year. This has something to do with people’s lack of sunshine. The study also said that one hour of sunshine every day could increase testosterone by 69%.
reduce cancer risk a study by the University of San Diego in the United States shows that women living in lower latitudes have a lower risk of ovarian cancer than those living in higher latitudes, because the former has a long time of sunlight exposure and a high vitamin D intake, which is more conducive to cancer prevention than the latter.
less depression studies have found that under sufficient sunshine, the secretion levels of adrenaline, thyroxine and gonadotropin in the human body will be improved, which will effectively improve bad psychology such as low mood and mental depression. Liu Baofeng, a senior psychologist of the China Mental Health Association, pointed out that many people suffer from insomnia, chest tightness and irritability in winter and rainy weather. The decrease of sunshine time is one of the causes of seasonal affective disorder.
enhance immunity Yang Li, Professor of the Graduate School of the Chinese Academy of traditional Chinese medicine, told the reporter that sun exposure has the effect of nourishing yang qi and healthy qi. There is a saying in traditional Chinese medicine that “picking the essence of the sun”, that is, collecting sunlight to generate the Qi of clearing the Yang. The normal functions of the viscera in the human body are all supported by Yang Qi. When Yang Qi is filled, the ability of the human body to resist diseases will be improved. The healthy qi is relative to the external evil. The sun can strengthen your body and enhance your immunity.
seize the two best “sun spots”
it’s best to bask in the sun at 10 a.m. and 4 p.m Hong Zhaoguang, chief health adviser of the national health and Family Planning Commission, said that it is best to bask in the sun from 10 to 11 a.m. Because the ultraviolet ray in the sun is low during this period, it can make people feel warm and soft, promote metabolism, and avoid damaging the skin. However, in summer, the sun is strong, so people had better put forward the time to bask in the sun; From 4 to 5 p.m., there are many X-ray components in the ultraviolet rays, which can promote the absorption of calcium and phosphorus, strengthen the constitution, and promote the normal calcification of bones. It is also a good “sun exposure point”.
sun for 15 ~ 20 minutes each time Yang Li suggests that when you are sunbathing in the morning, you should stand in a place with a good environment and a wide field of vision, face east, close your eyes, open your arms, face the sun with your palms, and slightly fold your fingers. At the same time, you should cooperate with deep breathing, and repeat this action many times. It is better to sunbathe for 15 to 20 minutes. After drying, you can rub your hands and massage your face, which has the effect of clearing your heart, calming your nerves and relieving fatigue. In the afternoon, when you are in the sun, you can turn your back to the sun, or beat while you are in the sun to help regulate the Qi and blood of the five internal organs.
avoid the sun in the afternoon in summer in summer, the ultraviolet rays are strong, so you must avoid the afternoon sun, and the time can be shortened to less than 15 minutes. Based on the principle of physical comfort, you can’t force it. Pay attention to keeping warm when you are in the sun in autumn and winter. In windy days, less sun should be exposed to avoid cold.
three parts should be exposed to the sun frequently.
back Jiang Liangduo, Professor of internal medicine at Dongzhimen Hospital of Beijing University of traditional Chinese medicine, told the reporter that there is a theory of “back is Yang” in the Yellow Emperor’s Internal Classic. Modern medicine has also confirmed that there are a large number of immune cells under the skin of people’s back, and these immune cells can be activated by sunbathing. So let your back get more sunshine, even if you wear clothes, it will help to absorb and synthesize calcium, and also achieve the purpose of nourishing yang qi, dredging meridians, harmonizing viscera, dispelling cold and relieving pain.
legs Jiang Liangduo said that drying your legs can dispel the cold in your legs, effectively relieve leg cramps, and accelerate the absorption of calcium in your legs. Especially for people with rheumatoid arthritis, solar energy can activate blood vessels and play an auxiliary therapeutic role. In addition, there are many acupuncture points on the legs, which can make people feel light and eliminate fatigue through the stimulation of sunlight.
overhead Hong Zhaoguang said that the sun on the head can fully promote the absorption of calcium. As long as the time is well controlled, it is also conducive to the development of the child’s brain and head bones, and also conducive to the growth of hair. Yang Li also said that letting the sun shine on the top of the head can warm the Baihui acupoint (located in the center of the top of the head), which has a certain effect of unblocking the hundred veins, nourishing the brain and nourishing yang.
four points to remember
don’t bask in the sun through the glass research shows that the ultraviolet transmittance through glass is less than 50%, and the effect of sunlight through glass is likely to be discounted.
don’t wear white clothes to dry white clothes will reflect ultraviolet rays onto the face or bare arms, causing skin injury, especially in summer when ultraviolet rays are strong. It’s better to wear red clothes, because the long wave of radiation from red clothes can quickly “eat” the short wave ultraviolet rays with strong killing power. It is recommended not to wear a hat. If you are afraid of dazzling, you can wear sunglasses.
four types of people cannot be exposed to the sun for a long time the weak, high blood pressure and heart disease patients should act according to their ability, and should not be exposed to the sun for too long. Liu Chunyang, chief physician of the children’s health care center of Beijing Children’s Hospital, reminds that children’s skin is delicate and should not be exposed to the sun for a long time. It is recommended to sun it in the shade of a tree. The time to sun it should be comfortable. If outdoor activities are long, you can apply sunscreen appropriately.
drink plenty of water after sunbathing after sunburn, you should drink more water and eat more fruits and vegetables, which can inhibit the production of melanin to a certain extent.