Recently, ushered in the first fall of the three-volt day, and a "sun leeward" was set off on the Internet. Some netizens think that the three-volt day sun back is "'heavenly moxibustion' without money", which can dispel dampness and replenish yang, while some netizens think that it has no effect, and even some netizens have symptoms such as sunburn and heat stroke. Can the three-volt day "sunbathing back" really be healthy?
phenomenon
"Three volts in the sky" appeared on the hot search on multiple platforms
The behavior of drying the back in three days is very popular on Weibo, Douyin, Xiaohongshu and other platforms. As of July 14, the topic related to "three-volt day sunbathing" on Weibo has been on the hot search, with more than 40 million views on related topics, including 30 million views on the topic of #three-volt day sunback best schedule#; The topic of #Sanfutian Tanback Best Timeline# on Douyin appeared on the hot search list. The reporter searched on the Xiaohongshu platform with the keyword "three-volt day tanning", and the number of notes shared by relevant netizens reached 30,000.
But a small number of netizens wondered, "Will it be harmful to the body to tan on an empty stomach in the morning?" "Can I take a shower before sunbathing?" In addition, "When is the right time period for sunburning?" "How long is it appropriate to tan your back?" "Does the sun really remove acne and dampness?" "When you are sunbathing, there is wind in the surrounding environment, will it have an impact?" "Do you need sunscreen on your sunburner?" are all issues that netizens are concerned about.
Doubts
The "sunbathing" time should not be too long
These groups of people should not sunbathe
In response to the "high heat" sharing posted on various platforms and the doubts of netizens, the reporter invited Jin Shenrong, chief physician of the Fourth People's Hospital of Sichuan Province, West China Chunxi Hospital of Sichuan University, and a famous traditional Chinese medicine doctor in Sichuan Province, to answer some popular questions.
Talking about the effect of three-volt day sunbathing, Jin Shenrong said that there is a certain health care effect, from the perspective of traditional Chinese medicine, three-volt day back can remove moisture and cold, as well as a certain amount of kidney tonic and promote calcium absorption. At the same time, sunning the back can improve blood circulation, and has a certain effect on improving sleep quality for people who do not sleep well.
Jin Shenrong suggested that it should not be bathed before drying the back, which will affect the effect of the sunbathing back; It is also not recommended to tan the back on an empty stomach, because the back will sweat a certain amount and may have a certain impact on the body. She also recommends drinking 250 ml to 300 ml of water before drying the back, preferably warm boiled water or sour plum soup and mung bean soup at room temperature.
"Through the sun's exposure, back tanning can promote metabolism and speed up blood circulation, but not everyone is suitable for back tanning." Jin Shenrong said that these four groups of people are not suitable for sunbathing: one is people who are allergic to ultraviolet rays; Second, the physique belongs to people with strong yang qi or yin deficiency and yang hyperactivity; The third is people with underlying diseases, especially those with diseases such as hypertension and coronary heart disease; Fourth, pregnant women and young children need to be accompanied by their families to tan their backs to avoid accidents.
In addition, Jin Shenrong also put forward some precautions for drying the back: first, wear light-colored, thin loose clothes; Second, wear a hat or protect your head with a parasol, and the head facing the sun may cause dizziness and headache; The third is to avoid drying your back in a windy environment, because the body is heated, which will cause the pores to open and be easily attacked by wind and evil and catch a cold; Fourth, when sunbathing, if the back is exposed, sunscreen should be applied to avoid sunburn.
Jin Shenrong suggested that the best time to dry your back is from 9 to 10 o'clock every day, or after 17 o'clock, the sun in these two periods is not so vicious, and it is more suitable for outdoor back drying. At the same time, the time to dry the back should not be too long, 15 to 20 minutes a day, preferably no more than 30 minutes, it is recommended to dry three times a week, once every other day.
Some netizens said that there will be cold sweat behind the sun, Jin Shenrong explained that back sweating is normal, but if you sweat a lot, you should consider whether there is heat stroke. She also suggested that you can take a bath for half an hour to an hour after the sun, and drink some light salt water at the same time, which is due to sweating on the back of the sun, and drinking light salt water can replenish sodium and water in time.
Jin Shenrong finally reminded that the weather is hot on three volt days, the spleen and stomach function is easily affected, and a reasonable diet is also essential. She suggested that everyone should focus on light and digestible foods in their diet, eat less fried foods, eat more green leafy vegetables, and reduce the burden on the gastrointestinal tract. In addition, you can also eat more fruits, such as watermelon, grapes, pears, etc., which can play a certain role in preventing heat and cooling.
A little more knowledge
1
No sweat or heat? It could be too hot!
Even in the high temperature for days, heat stroke is easier to find. The human body will automatically adjust the body temperature, control the body temperature within a certain range, when the human body temperature regulation reaches the limit, the body's heat dissipation is less than heat production, resulting in heat accumulation, the core temperature of the body exceeds the range that the human body can bear, the human body has an imbalance, the body function system collapses, there will be heat stroke symptoms.
High temperatures are one of the main factors that cause heat stroke. Medical science author Ling Chumian pointed out that compared with other mammals, the heat dissipation conditions of the human body are actually very superior. The human body does not have thick hair covering the skin, and the sweat glands are developed, the skin as the largest organ of the human body, can take away the heat of the body through perspiration, sweat will also take away heat during the evaporation process, most of the weather, the heat dissipation function of the human body can meet the demand. However, in the environment of high temperature and humidity, the body's external heat dissipation is limited, especially for workers who need to work outdoors for a long time, and their sweat glands are more likely to fatigue. Normal people sweat profusely in high temperatures, but heat stroke patients may have dry lips and no sweat on their bodies. Therefore, the whole body dryness in a high temperature environment should be paid more attention to, which may be a manifestation of overheating of the human body.
In addition, people with underlying medical conditions, as well as infants and the elderly, should be more careful of heat stroke. The thermoregulatory system of infants and young children less than two years old has not yet fully developed, and the elderly have weakened the overall body regulation ability. Some people with underlying diseases such as diabetes, hyperthyroidism, and neurological diseases are also more likely to suffer from heat stroke in high temperature environments.
2
Some cooling methods could be "IQ taxes"
Rubbing the body with alcohol is a cooling method that many people know. The principle of alcohol heat dissipation is similar to the principle of water heat dissipation, both take away heat through volatilization, but alcohol has a lower boiling point than water and is easier to volatilize, so the use of alcohol heat dissipation will bring a cooler feeling. However, Sun Yafei, a special research assistant at the Institute of History of Natural Sciences of the Chinese Academy of Sciences and a popular science author, said that wiping alcohol to dissipate heat has greater risks. Alcohol can be quickly absorbed by the skin, excessive use can cause drunkenness, paralysis and other problems, it is generally not recommended to use alcohol to disinfect or heat dissipate a large area of the skin.
Sticking cooling stickers is also a cooling method that the public uses more often. Some cooling stickers contain alcohol, which takes away heat through alcohol evaporation; There are also some cooling stickers containing peppermint, essential oils, etc., which can give people a cool feeling, but this cooling feeling is only a tactile experience, making the brain feel cool, but it does not really cool the human body.
3
Practicing three volts for weight loss summer, is it reliable?
With the advent of the "three-volt day", this summer, many fitness bloggers said that the "three-volt day" is the best time of the year to lose fat and weight, the body's metabolism is accelerated, and exercise is twice as effective. However, Ling Chumian pointed out that although exercise is good, people who have high temperature days still have to do their best: "People with good physical fitness or exercise foundation can appropriately strengthen exercise in 'three-volt days', but they always stay in air-conditioned rooms on weekdays, and people who are not strong in adaptability to high temperatures, or whose body metabolism and cardiopulmonary function are weak, are not suitable for increasing exercise in 'three-volt days'."
At the same time, electrolyte imbalance may also occur with heavy sweating. After sweating a lot of exercise, the body's electrolytes are lost, the balance of water electrolytes is destroyed, and drinking more water at this time will not help. Moreover, ordinary people do not have to pursue sweating in sports, even if they want to exercise, it is recommended to do some exercise within their own tolerance in a room with a suitable temperature.
In addition, Ling Chumian reminded that for people with unsound cardiopulmonary function, summer is also a high incidence of acute attacks of cardiopulmonary diseases.
Each person's adaptability to temperature is different, in most cases can only be based on subjective feelings to assess their own situation, not very reliable, therefore, Ling Chumian reminds that about heat prevention, do not have a fluke mentality, the body may perceive the crisis earlier than the will, if you feel uncomfortable to get out of the high temperature, high humidity environment as soon as possible, can not rely on willpower to support.
(Chengdu Business Daily Comprehensive Chuanguan News, Central Radio Network)