Why do you practice Sanjiu in winter?

Practicing three or nine in winter and three volts in summer means: practicing martial arts means persistence, avoiding three or nine in cold and three volts in heat.

Since ancient times, our ancestors have taught us to practice "Three or Nine Days in Winter, Xia San Days", because three or nine days are the coldest and hottest times of the year. Exercising in cold winter and hot summer can not only keep fit, but also enhance our adaptability to extreme weather such as cold and hot.

In addition, there is a layer of spiritual connotation: cultivating people's strong will, not afraid of cold and heat. Therefore, strong-willed fitness experts abide by the Millennium ancient training, regardless of the cold winter and hot summer, they will continue to exercise.

Extended data:

As the saying goes, "1929 didn't make a move, and in 3949 we walked on the ice ..." Sanjiu refers to the third "nine days" from the winter solstice, which is the coldest period of the year. In fact, cold weather is simply the "right hand man" of cardiovascular and cerebrovascular diseases. Many studies at home and abroad show that the temperature drop is positively correlated with the incidence of cardiovascular and cerebrovascular diseases.

1. In the cold winter, with the decrease of the outside temperature, people's body temperature drops accordingly, and cold stimulation causes sympathetic nerve excitement, which leads to the increase of blood pressure. In addition, hypothermia leads to contraction of subcutaneous and peripheral blood vessels, which also increases blood pressure. The increase of blood pressure caused by the double action will directly increase the heart load.

2. Cold stimulation can also lead to the increase of adrenaline and catecholamine in the body, affect neuroendocrine and blood circulation system, and easily induce myocardial ischemia and arrhythmia.

3. When the body is stimulated by cold, blood vessels are prone to spasm and contraction, which can induce angina pectoris and even myocardial infarction.

4. In winter, the air is dry, people generally drink less water, which is easy to lack water in the body, leading to an increase in blood viscosity. In addition, China has always paid attention to winter tonic, and the diet structure is greasy, which will aggravate dyslipidemia and easily induce thrombosis.

When it is cold, people open the window for a short time, and the indoor air circulation is poor, so it is easy to catch a cold. In severe cases, it will cause lung infection, affect lung ventilation function and lead to myocardial hypoxia. Foreign studies show that influenza has become an independent risk factor for patients with coronary heart disease.

6. In winter, the haze weather is frequent, the oxygen content in the air drops, and the oxygen intake of the human body is relatively reduced. After PM2.5 enters the body, it will affect blood pressure through a series of complex mechanisms, thus inducing myocardial ischemia, arrhythmia and lung diseases.

The dog days are between the light summer heat and the heavy summer heat. From mid-July to early August in the solar calendar, it is the hottest, wettest and sultry day of the year.

After falling into the sky, the surface humidity becomes higher, and more heat is absorbed and less heat is released every day. The time when the surface heat accumulates and reaches the peak value is called "three volts".

The hot summer is also the season of high incidence of cardiovascular and cerebrovascular diseases. The reason for this is the following：

1, when the outside temperature rises, people's body temperature will also rise accordingly, subcutaneous blood vessels will expand, subcutaneous blood flow will increase significantly than usual, blood flowing back to the heart will also increase significantly, and the burden on the heart will increase. In addition, the increase of body temperature and the enhancement of sympathetic nerve excitability lead to the acceleration of heart rate, which further increases the burden on the heart.

2, the temperature rises, causing people to sweat more. If you can't replenish water in time, it will lead to the increase of blood viscosity and easy to form thrombus. Increased sweating will also lead to electrolyte disorder, which will lead to arrhythmia.

There are not only "barbecue mode" but also "sauna mode" in summer. In sauna weather, the air humidity increases, the air pressure is low, and the oxygen content in the air decreases, resulting in insufficient oxygen intake.

Therefore, patients with heart diseases such as coronary heart disease often feel chest tightness and shortness of breath in this sauna day, and even acute myocardial infarction may occur in severe cases.

In hot summer, everyone can't live without air conditioning. As we all know, people frequently switch between hot summer and cool environment, and the change from cold to hot is also a great challenge to our cardiovascular system, especially for middle-aged and elderly people with decreased vascular elasticity and arteriosclerosis.

In summer, the days are long and the nights are short, and the nightlife is richer than other seasons. Because of the hot weather, it is easy to be agitated, which further affects the quality of sleep. Insufficient rest is also one of the important reasons for heart attacks.

To sum up, extreme weather like March 9 and dog days has been a great test for our cardiovascular and cerebrovascular systems. If you go against the trend and strengthen exercise, the result may be counterproductive.

People's Network-It's naive to practice 39 in winter and 3 in summer, okay?

Baidu Encyclopedia-practice for three days in winter and three days in summer.