As night falls, you can always hear this online divine comedy when you pass the street square on your way to work. Looking at the square, my aunt was dancing again.

Simple movements, stiff expressions and clumsy dances, although oily and funny, make people admire the infinite vitality of Chinese aunts and feel kind and lovely.

Walking to the entrance of the village, another scene came into view. Under the banyan tree, a dozen grandfathers sat together. One sits on the "Chuhe River" and the other strictly abides by the "Han boundary". They sat cross-legged and racked their brains, letting the sky get dark and the sun and the moon dim. As long as the "general" gives the order, the world will be a foregone conclusion.

Square dance and chess have cured the body and mind of thousands of retired people in Qian Qian. Sweat spilled on the square, and rich meanings flooded my face; Besides, sitting still and playing chess seems to be able to cultivate one's mind and cultivate one's nature.

This can't help but remind me: Who lives longer and healthier than an aunt who plays chess in square dance? Does life lie in exercise or rest?

Life lies in exercise, which has always been a golden rule deeply rooted in people's hearts. However, nowadays, many people have begun to admire the "rest" lifestyle and feel that rest is the secret to supporting life.

As a result, on the topic of "what is life", there are two schools in the Jianghu, namely "quiet school" and "sports school". Exercise vs rest, which is better? Let's have a try.

In a paper published in BMJ (British Medical Journal) from June 5, 20438 to June 0, 2020, researchers took more than 1500 elderly people as research objects and divided them into three groups.

1 group elderly people do high-intensity exercise twice a week, and the heart rate during exercise is 90% of the maximum heart rate; In the second group, the elderly do moderate-intensity exercise twice a week for 50 minutes each time, and the heart rate is 70% of the maximum heart rate; The third group is the control group, which does not exercise much, as long as it has regular physical examination.

After five years of follow-up, the researchers analyzed the physical function of the three groups of elderly people, and found that the elderly in 1 group were superior to the other two groups in both psychological and physiological state, with the lowest mortality rate.

This study confirms the importance of exercise to some extent. From this point of view, in the debate on "what is life", the movement has won temporarily.

So, is "life lies in movement" the truth? Does the aunt who dances square dance live longer than the uncle who plays chess?

Don't jump to conclusions yet. As we all know, exercise brings many benefits to people, such as enhancing physical fitness, promoting metabolism and improving cardiopulmonary function. However, everyone knows that exercise is good, but no one knows that excessive exercise is actually harmful!

A recent study published in Cell Metabolism shows that normal exercise is beneficial to mitochondrial function in the short term, but excessive exercise will damage mitochondrial function and induce insulin resistance.

Mitochondria are the "power station" of cells, and if their functions are damaged, cells cannot obtain energy; Insulin resistance is a risk factor for diabetes!

In addition, excessive exercise can also damage the human kidney. A search on the Internet shows that cases of rhabdomyolysis syndrome and acute kidney injury caused by excessive exercise abound.

Others may even cause cardiovascular and cerebrovascular accidents due to excessive exercise, which will eventually lead to sudden death. For example, when the male star Godfrey Tsao participated in the recording of the program, he eventually induced sudden cardiac death due to excessive exercise for a long time; Zhang Zhixuan, a 23-year-old model from Taiwan Province, also died suddenly due to excessive exercise, which is a pity!

Also, according to a follow-up survey of 45,000 people in Germany and Sweden, people who exercise excessively are twice as likely to die of cardiovascular and cerebrovascular diseases as ordinary people!

It turns out that life will not stop without exercise. Life may lie in exercise, but it can never lie in excessive exercise! We should never encourage others to live longer by working hard.

So, what is excessive exercise? How much exercise does a person need to achieve to be appropriate? There are usually two ways, one is to look at the heart rate, and the other is to look at the symptoms.

The optimal exercise heart rate is one of the important indexes to measure the exercise effect, and its calculation method is as follows:

Another way to judge the amount of exercise is to look at the symptoms. When the following negative subjective feelings appear in exercise, be alert to excessive exercise:

As for the appropriate amount of exercise, you can refer to the Guide to Physical Exercise and Sedentary Behavior formulated by the World Health Organization (WHO) last year:

Generally speaking, does life lie in exercise or rest? I can't give a definite answer. Who lives longer, the aunt who dances square dance or the uncle who plays chess? I can't say for sure. Perhaps, according to your own situation, "combination of static and dynamic" is the king to support your life.

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