Sanjiu is known as the coldest and most dangerous day, what issues need to be paid attention to duri

This period of time is indeed the most dangerous day, especially for the elderly, because the cold weather will make the blood vessels of the elderly brittle and thin, so it is easy to cause some sudden diseases, such as cerebral infarction, cerebral hemorrhage and so on. So for the elderly, the most important thing in winter is to keep warm, and try to reduce travel, because in winter it will be easy to snow, the road surface is icy, in this case, if the elderly legs and feet are not very convenient, then it is easy to fall. Because of age, once you fall, there is a high chance of causing fractures, and your health will become worse and worse.

So let's analyze in detail what problems we should pay attention to when the coldest day is 39 days. <>

1. Do some appropriate exercise on the 39th day

In fact, whether you are young or old, exercise is indispensable. However, the elderly must take care of the weather when exercising, and go outside to exercise if the road conditions outside allow. Try to wear non-slip shoes when traveling, don't let yourself fall, exercise can make the body's blood circulation faster and better, so that you can reduce the occurrence of some diseases.

And when doing exercise, the body also produces heat, which can play a good role in keeping warm. The elderly can go outside around 9 a.m., and it is okay to walk or jog the body, so that the body's resistance becomes stronger and stronger, so that it is not easy to catch a cold in winter. <>

2. Learn to maintain health in winter

Usually we can eat some warm foods, such as eating more mutton, mutton will bring calories to our body in winter. If there is heat on the body, you can improve the body's ability to withstand the cold, for example, in life, some women or the elderly are more afraid of cold, so you can often eat some warm ingredients. This can warm up the body, can well resist the cold of winter, and you can also take more baths or foot soaks in normal times, which can make our body's metabolism better and better.

When the body's internal environment changes, the body's ability to resist will also become better. Therefore, in Tokyo, it is essential for young and old people to learn how to maintain their health. <>

3. The most important thing in winter is to keep warm

The elderly will always advise the young to wear more often, otherwise when you get old, your body will have all kinds of problems. Young people always don't think so, they never listen to the elderly, and they always wear very little for the sake of fashion. However, it is precisely because of this that the cold in the body is too heavy, and it is true that when you reach old age, various diseases will come to you.

What the old man said is not unreasonable, so young people must also learn to keep warm in winter, otherwise it is easy to pose a threat to the health of the body. In short, in winter, in order to allow us to better survive the cold weather, we must pay more attention to life.

In winter, it is the time when the incidence of cardiovascular and cerebrovascular diseases in the elderly is high, so it is called the coldest and most dangerous time in winter. When the 39th day comes, for people with poor physical fitness, it is very easy to get sick, such as catching a cold and so on. There are also some elderly people who have myocardial infarctions, and cerebral infarctions are also frequent, which is very dangerous.

For those who are usually afraid of the cold, it is even more uncomfortable. Therefore, if you want to spend the weather peacefully, you need to pay attention to these problems in your life, so that you can not let the body live, or reduce the probability of getting sick. <>

The first thing to know is why Sanjiu is the most dangerous

In winter, if the weather is very cold, the blood vessels of the human body will become brittle, so these colds will cause severe spasm of the blood vessels, which is very easy to produce diseases such as cerebral infarction or cerebral hemorrhage. In addition, in winter, it is very cold outside the body, and it is relatively warm indoors, precisely because the temperature difference between indoor and outdoor is relatively large, so if it is in and out, it is easy to cause arterial spasm, which will cause angina pectoris or myocardial infarction. In winter, the fog outside is also very harmful to the body, especially to the lungs, because there are a lot of pollutants in the fog, if you do not protect the respiratory tract at this time, it is easy to cause diseases.

In winter, our stomach metabolism is very slow, and if we eat some raw and cold or hard food, the burden on the stomach will also be inexplicably increased. <>

Therefore, we must pay attention to keeping warm for three or nine days

Many young people for fashion, for the sake of beauty, sometimes always show their feet and neck, or wear very little, which is very bad for the health of the body, after the cold invades the body, it will lead to excessive cold in the body. This kind of cold will also cause our body's metabolism to be disordered, and the blood circulation will become poor slowly, which will make the body weaker over time, so if the cold invades, there are other diseases in the body, then it is easy to lead to the aggravation of the disease. In life, we must pay attention to keeping warm, so that we can keep out the cold.

Only after we have achieved true protection from the cold can we ensure that our body will not be damaged by the cold. <>

The three-nine-day diet also needs to be paid attention to

At this time, we can eat some warm ingredients, such as mutton, beef, etc., these foods are warm foods, it can help the human body improve the ability to keep out the cold, for those who are more afraid of cold, it is good to eat some often. In winter, you can soak your feet properly, soak your feet to warm up the body, and then you can improve the healthy environment inside the body, so that the body's metabolism has a good state, and you should exercise more, but you must pay attention to the unintentional overdose when exercising in winter, and try to do it slowly, especially for those middle-aged and elderly people, it is recommended not to do sports outside, and do some simple exercises at home.

Theoretically, yes.

During the winter solstice, the day is the shortest, the angle between the direct sunlight and the ground is the smallest, and the sunshine intensity per unit area of the ground is the smallest, so the ground receives the least solar heat every day, and the deficit of the daily heat budget of the ground has not yet reached the maximum. After the winter solstice, although the daytime is increasing, but the growth rate is very slow, from the winter solstice to the "Sanjiu" period, the average daily growth is only about one minute, at the same time, the angle between the direct sun and the ground increases very slowly. The daily heat budget of the ground is still in deficit, so it continues to lose heat and the ground temperature continues to decline.

The total heat deficit of the ground only reached its maximum value in the "39" season. Since the temperature of the air is mainly affected by the ground temperature, this leads to the lowest temperature in the "March Nine" season (of course, this is not the case in the whole country, it is the same every year, and it varies from region to region and year to year). In addition, around the time of "March 9", the cold air mass in Siberia also developed to an extremely strong stage, and the frequent invasion of strong cold air is also one of the reasons for the low temperature.

The Earth absorbs the heat from solar radiation during the day and emits it at night. In summer, more heat is absorbed during the day and less heat is emitted at night, so that some heat can accumulate every day. In winter, the heat absorbed during the day is less and the heat emitted at night is more, so not only can it not be stored every day, but some of the heat accumulated in the summer must be used.

On the day of the winter solstice, there is little heat absorbed during the day, but there is still some stored heat on the earth. After the winter solstice, the stored heat becomes less and less, and by the "Thirty-Nine", the storage of the earth's heat is the lowest time of the year, so it is the coldest.

As a method of keeping time for the cold winter, China's folk rent will be divided into 9 stages after the 81 days after the winter solstice, each stage is 9 days, called "winter ninety-nine", that is, often said to count nine cold days. Among them, the 19th to 27th days after the winter solstice every year are called "Sanjiu".

In a year, the day of the winter solstice is the shortest, the angle between the sun's rays and the ground is the smallest, and the ground gets the least amount of solar heat, it should be said that the coldest is on the winter solstice, but the fact is not, it is "cold in Sanjiu". Why is this empty?

Meteorological experts say that the temperature on the ground is not only affected by the intensity of the sun's rays, but also related to the heat dissipation on the ground. Because after the summer solstice, the day is long and the night is short, the angle between the sun's rays and the ground is larger, the ground gets the most heat, and the heat dissipation at night is less, so that the heat storage of the ground gradually increases, to the winter solstice, although the sun irradiation time is shorter, the angle between the sun's rays and the ground is the smallest, but the heat stored by the ground in summer and autumn can also be supplemented, so the weather is not necessarily very cold.

In the "39", because the ground receives less solar heat, the heat dissipation at night exceeds the heat absorbed during the day, and the heat stored on the ground has been exhausted at this time, and the ground temperature gradually drops due to the heat that cannot make ends meet, and the weather is getting colder and colder. At this time, if there is the influence of cold air, the weather becomes very cold. Therefore, the weather in "Sanjiu" is the coldest.