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Chapter 743 743 · The Method of Body Temperature Regulation
A person's breath-hold limit is determined by the amount of oxygen in the blood, but it is the high concentration of carbon dioxide that creates the urge to breathe.

For most untrained ordinary people, the so-called breath-holding limit is not the low oxygen content of the body, but the stage where the carbon dioxide concentration is too high. The limit is still far away.

Therefore, several factors that affect the time of apnea, the initial oxygen content of the blood, the oxygen consumption during apnea, the tolerance to carbon dioxide, and the limit value of hypoxia become the key points.

This is the key point of holding your breath under water that Zhang Yang got from looking up the information temporarily. At this time, he controlled his body in front of the circular hole, and tried to keep himself as motionless as possible. Only his hands and feet were swinging slightly, and Slowly adjust your mentality to avoid thinking wildly.

He understands that the brain consumes more energy when thinking a lot, not to mention that people can fully decompose nutrients such as sugars, lipids, and proteins into energy only when they get enough oxygen.

A desire to open his mouth and open his nostrils to breathe has gradually appeared, and gradually became stronger. He knew that he had reached his limit, that is, his tolerance to carbon dioxide had reached its limit.

Picking up the flashlight in his hand, he irradiated the opposite side of the circular hole. After confirming that there was probably no danger, Zhang Yang controlled his body and slowly swam through the circular hole.

A path that was also dug on the rock wall appeared in the light, but luckily, the circular path in his line of sight extended upwards, and it seemed to be getting wider and wider .

……

"Director, Zhang Yang said it was too dangerous and told us not to go there, what should we do?"

At one-third of the mountain ridge where Zhang Yang set off before, the security captain and several security team members of the scenic spot followed the person in charge of the scenic spot to come here in a hurry, and finally heard what Zhang Yang said in the live broadcast room. If they don't go up the mountain.

The person called the director is a middle-aged man, wearing glasses is gentle, but if you don't look at this guy's figure, he looks like a scholar with glasses, but this guy is from the neck down That muscular figure made the clothes bulge, and immediately gave people the feeling of a strong man.

"No, I'll go up and have a look. You guys haven't climbed the mountain before, so just stay below and wait for the rescue team to show them the way!"

After saying this, the director unbuttoned his suit, and then, in the eyes of the security captain who was still relatively calm but the other team members were stunned, he threw the jacket over, and then opened the backpack he brought over. .

In less than a minute, an 'elite soldier' ​​wearing jungle camouflage and combat boots appeared in front of everyone, and even the gold-rimmed glasses hanging on his ears were taken away by the other party. He dropped it and threw it to a security guard.

A group of security team members looked at the director who was climbing up the mountain ridge with a small backpack on his back, each of them became dumbfounded, and couldn't help but wondered in their hearts. Are they the director of the top two sentences?
"Captain, is this the director?"

A security team member who helped the director with the golden glasses saw that the captain's expression was still calm, and asked him as if he knew something.

Unexpectedly, when he heard the question from the team member under him, the security captain gave the team members he brought here a hard look.

"Everyone of you, don't think that I don't usually know that you are talking about our director in private, why you are a sissy despite being tall and thick, you know what a fart.

When I was in the reconnaissance force, our director had been in the special forces for three years, and he had served as an instructor for me several times. If the director didn't let me tell, I would have dealt with you guys long ago.

Alright, let's get ready to withdraw. Although I don't watch that Zhang Yang's live broadcast, and I don't know how strong he is, our director is not weak. Well, it's easy to save this anchor. "

……

Of course, Zhang Yang didn't know that there was a veteran special forces member who disobeyed advice and came to rescue him. He breathed fresh, humid and icy air again, and just carried out some extremely rapid self-warming, which made him feel better early. His body, which was shivering from the freezing cold of the river, began to recover a little bit of temperature.

Taking the drone out of the backpack again, and turning on the searchlight of the drone, he once again sat up on the spot and raised his legs to keep his body warm. Continue with plenty of physical strength, otherwise the low temperature around you will instantly make your body temperature lower when you sweat.

At least according to what Zhang Yang knows, when the human body is exercising, the total heat production can be up to 10-15 times higher than when it is resting. Skeletal muscle becomes the main heat-producing organ at this time, especially during the most intense exercise , The heat production of skeletal muscle accounts for more than 90% of the total heat production.

Due to the sharp increase of muscle metabolism and heat production during exercise, although the heat dissipation process has been strengthened through the regulation of the nervous system, it still lags behind the heat production process, so the body temperature rises.

He is using this principle now to rapidly increase the body surface temperature so that he does not feel so cold, but you really have to continue this kind of exercise. The heat that comes out will quickly dissipate in the low temperature environment. At that time, the person will still feel cold, or even colder, because the sweat on his body has not been wiped off, and there is no towel in his hand to wipe the sweat.

It has to be said that the human body's automatic body temperature regulation function is very peculiar. Often exercising in low or high temperature environments will make the body's body temperature regulation ability stronger.

People with good body temperature self-regulation ability can quickly strengthen the heat production process and reduce heat dissipation after exercise under low temperature conditions, while in hot environment conditions, they can quickly strengthen the heat dissipation process after exercise.

But all of this requires frequent outdoor sports, or insisting on cold water baths, winter swimming, etc., and it is not easy to catch a cold. This is because there is often a large gap between the body temperature and the ambient temperature. Occasionally encountering low temperatures can exercise the thermoregulatory function and improve the adaptability to high and low temperature environments.

And Zhang Yang is in this state now. He often broadcasts live outdoors. He has experienced scorching sun and ice and snow. He has been to the hottest and coldest places in China, and he is often in the wild. It can be said that his ability to automatically regulate body temperature is still very strong. If he has a dry towel on his body at this time, wipe off the sweat he just made. Through this kind of exercise, he can keep his body temperature continuously.

　Oh, there is still today, it is being coded...

　　At the same time, I would also like to thank [Zhimeng] for the 100 book coins and [Stewed Golden Elbow] for the 100 book coins.

　　In addition, my book can be read in 'Hongxiu Tianxiang'?

　　I actually received a lollipop from [Hanxue h6] friend yesterday, and the fan label is still [Harem fan]?
　　I'm Sparta...emmm
　　
　
(End of this chapter)