PS: Thanks to Scarlet Feather for the tip!

Turning to the diving side, this "site" is small, but it is a relatively deep part of the reservoir. This is a competition that can be played by many people at the same time.

In terms of diving, some people can stay down for a long time, which may be longer, so more people need to participate at the same time, so there is enough time to cope.

At this time, a minute passed, and several people couldn't help but come out of the water to breathe. Being able to hold your breath on the surface of the water for a minute is actually the performance of normal people, people who swim a lot, or people who exercise a lot, their lung capacity is relatively large, and they can last for two or three minutes.

A man crawled to the beach and gasped: "Whew! I can't stand it anymore. I've counted in the water, it should have been more than a minute. Well! What number am I in? ”

Many people on the beach couldn't bear to hit him, but Chen Wu said to him very honestly: "You are the second to come out first." ”

The man's eyes widened for a moment, and then he was deflated: "Wouldn't it? This is already my limit, and I thought it was good, but I used to hold it for about half a minute. ”

After two minutes, a lot of people came out one after another, and many people were at this limit.

"They're amazing! I can hold it for so long. The tourist just now said, with some envy in his tone.

"What's that really good? Do you know the world's record for breath-holding? In the last deep-water breath-holding race at Baofeng Lake, an Italian broke the world record with a time of 20 minutes and 55 seconds. One or two minutes, which is normal, is three or four minutes, as long as there is a certain amount of training, ordinary people can achieve it. Li Quan said.

As soon as these words came out, many people were stunned for a moment, obviously not knowing that the limits of people could reach that level.

"No, it won't! More than 20 minutes without breathing and still not dying? Can he breathe underwater without oxygen? "A lot of people don't believe it, it's beyond their imagination.

Chu Jiaqiang explained: "There are very few people like that, their hearts will beat more slowly, and they will need very little oxygen. It's not surprising that ordinary people can practice for up to 4 minutes. But be careful when training to hold your breath. Because the body is actually in a state of very hypoxia after training, and you obviously feel that there is no discomfort, as if you don't want to breathe at all. Therefore, if you don't pay attention or the heart and lung function are not good, it is easy to pass, which is what we often call running out of gas. ”

In fact. The way to practice breath-holding is simple. Everyone can learn and it is easy to learn.

Take a deep breath first, inhale each puff until you can't breathe in again, and exhale again until you can't breathe in again. The whole process should be calm and even. Until the brain is slightly dizzy or sleepy, and then the feeling completely disappears, it takes about 5 minutes in the middle, at which time to start holding your breath, and time.

You will find that even the first time you practice. It's also easy to hold your breath for half to two minutes, if you feel uncomfortable such as can't hold back, or your head is a little dizzy, stop immediately, don't force it.

Just practice a few times a day, but it's best to have an interval of more than a few hours, and you will soon improve to about a minute. But if the feeling of drowsiness and dizziness intensifies, do not practice anymore to avoid a lack of oxygen to the brain. And don't force yourself to work longer or more.

"And. People like them who hold their breath for a long time, its

It's really not good for the body. The courage of the moment often hurts oneself. Holding your breath too much has great disadvantages. Chu Jiaqiang said to them. Don't think that the longer you hold your breath, the greater your lung capacity. The better the body.

Of course, it is undeniable that it is usually necessary to hold your breath to cooperate when you are exercising with maximum stationary force. Such as heavy loads, weightlifting, wrestling, tug-of-war, "wrist wrenching", etc. Breath-holding can reflexively induce an increase in muscle tone, which can create the most effective contraction support conditions for the relevant movement links.

But people only get to the side where holding their breath is good for exercise. I don't know that breath-holding can also have a negative effect on the human body.

Yang Lao also nodded: "That's right!" Do everything in moderation. Holding breath causes the intrathoracic pressure to rise, resulting in the obstruction of venous blood return to the heart, and then the heart is not fully filled, the output is sharply reduced, and the blood pressure drops significantly, resulting in incomplete blood supply to the myocardium, brain cells, and retinas, resulting in dizziness, nausea, tinnitus, black eyes and other sensations, which affect and interfere with the normal operation of exercise. ”

In addition, Yang Lao also added that at the end of breath-holding, there will be reflexive deep breathing, which causes the intrapleural pressure to decrease, and the blood that was originally retained in the veins quickly returns to the heart, impacting the myocardium and hyperstretching the myocardium, and the blood pressure also rises sharply.

This will have serious adverse consequences for children's hearts due to low tolerance and easy to overstretch and relax the myocardium, and for the elderly due to poor elasticity and fragility of blood vessels, it is easy to break the blood vessels in the heart, brain, eyes and other parts.

"It's about getting the middle in the middle." Finally, Yang Lao reminded everyone.

"It's best not to inhale too deeply before holding your breath; At the end of breath-holding, in order to make the internal pressure in the pleural cavity have a buffer gradually decreasing, the exhaled breath should be gradually and modestly squeezed out of the glottis, that is, the exhalation of the throat with a "hi" sound; Breath-holding should be used at the critical moment of decisive victory, and it is not necessary to hold breath in every action and process. "Chu Jiaqiang taught everyone the correct way to hold their breath.

"Oops! There's a guy who hasn't come up yet, it's been four minutes. Someone on the shore shouted.

"It's not going to happen, is it?" This time, even the old village chief was a little worried. Although listening to these people say it is easy, if you have exercised alone, three or four minutes will not be a problem, but you are not afraid of 10,000 just in case!

And at this time, a huge amount of water surged under the water, and everyone knew that the man was going to get up.

Sure enough, a young man popped up. But this person was actually lying on the body of the giant carp, and everyone couldn't figure out what was going on. The man said with a depressed face: "I can hold it for a while, but this giant carp is stunned to push me up, unlucky!" ”

Everyone on the shore was amazed, and Professor Wen and the others suddenly guessed that maybe the giant carp thought that guy was drowning, so he was kind enough to save people, where did he know that good intentions did bad things? Those two giant carp are human, this is what everyone knows.

"Haha! The giant carp is also kind! Don't be depressed when you're young, now you're in the lead for the time being, if you can't get the first place, you'll be given another chance when the time comes. Someone laughed.

The people from the TV station hurriedly filmed this scene, feeling that this kind of anecdote is much more newsworthy. After all, swimming competitions are really commonplace, even though this is rural. But "giant carp saves people" is different, I'm afraid there is no other thing in the whole world except here. In the past, it was always heard that dolphins would save people who had fallen into the water.

♂♂