Jumping into the water, the cold water immediately surrounded him.
The water here is not deep, only more than one meter. When a person stands in the water, it only reaches his abdomen, not his chest.
When I came here, I was riding in a car, and there was some mountain wind. My body was cold. When I got into the water, my lower body was in the water, and my upper body was soaked by the splashing water. At first, I didn't think there was anything wrong, but after a while, there was a gust of mountain breeze.
After blowing, Li Zheng couldn't help but trembled.
Fatty Wei next to him shook his huge head and said, "What kind of water is this! Why is it so cold?"
Li Zheng said: "This is an irrigation canal for agricultural purposes. The water is naturally from the river or reservoir. Of course it is cold."
In fact, they are all wrong.
If it's river water or reservoir water, it won't be that cold.
This is a serious landscape.
A waterfall flows down from the mountain, and a large pool emerges at the foot of the mountain, which is then led here through an irrigation canal.
After everyone arrived in the water, Tong Zhi and several other instructors from the company inspected along the water channel, and then began to issue new orders.
"Everything is done, squat down!"
Everyone can only squat down.
But once they squatted down, everyone immediately realized something was wrong.
Originally, the water was not deep, but after squatting down, the water directly covered the neck and reached the chin. Some short people directly soaked their mouths, so they had to close their mouths tightly and breathe only through their noses.
After soaking for about ten minutes, Tong Zhi looked at the stopwatch and felt that the time was almost up, so he gave the order: "Stand up!"
After standing up and standing for about twenty minutes, Tong Zhi asked everyone to squat down again.
After about ten minutes, everyone was asked to get up again.
At first, everyone thought that Demon Tong was bored and deliberately tormenting everyone.
As a result, it gradually became amazing.
The blisters soaked his body and clothes. When he stood up again, Li Zheng found that his body temperature was obviously dropping rapidly.
The principle is actually very simple. If you simply soak in the water without moving and adapt to the temperature of the water, the human body will not feel too uncomfortable.
But once you get up, the mountain wind blows over your wet upper body, quickly taking away body heat like a radiator.
Coming and going, Devil Tong's purpose is to make everyone lose their body temperature in the shortest possible time.
Rapid questioning can lead to hypothermia.
Li Zheng knew this very well.
He had experienced this feeling before under the ruins.
So afterwards he inquired about this kind of formal attire many times.
He knew the power of it.
Because the normal body temperature of the human body is 36.5–37.5 degrees Celsius, hypothermia can be divided into three stages depending on its severity.
The first stage is relatively mild hypothermia, where the body temperature drops to 1-2 degrees lower than the normal body temperature. At this stage, the human body will tremble, the hands will be numb, and it will be unable to complete complex movements. The blood vessels in the distal limbs will constrict to reduce heat.
Dissipation. Breathing is fast and shallow. "Goosebumps" appear on the skin, trying to make the hair stand up to form an insulation layer.
However, due to the lack of hair on the human body, this reaction has limited effect, but it has a greater effect in other species.
Therefore, people with hypothermia may feel fatigue and abdominal pain, and at the same time, they may strangely find that they actually feel warm.
If you think that you have survived it and have prevented the danger of losing questions by shaking your body or something like that, you are totally wrong.
In fact, this is a sign that hypothermia has progressed to the second stage.
When the condition of a hypothermic person enters the second stage, the body temperature will drop to 2-4 degrees lower than the normal body temperature. At this time, the body will tremble more violently, the muscle incoordination will be more obvious, and then the movement will obviously feel slower and more difficult, accompanied by
There is a stumbling step and confusion of direction, although the patient may remain alert.
The human body will respond in self-defense to this hypothermia, and the superficial blood vessels will continue to constrict to maintain the temperature of vital organs. The patient's face will be pale, and the lips, ears, fingers and toes may turn blue.
If hypothermia has not been treated or effectively prevented, it will enter the terrifying third stage.
At this time, the body temperature drops below about 32 degrees, and the shaking of the body usually stops. Language difficulties, slow thinking, and memory problems begin to occur.
The most frightening time is when the person who has become hypothermic loses the ability to save himself. Usually, he can no longer use his hands, becomes unstable when standing, and cell metabolism stops.
Finally, hypothermia will enter the fatal stage. When the body temperature drops below 30 degrees, the exposed skin turns blue and swells, muscle coordination is almost completely lost, walking is almost impossible, the speech is incoherent, the actions are irrational, and the pulse and breathing are abnormal.
It slows down gradually, but ventricular tachycardia and atrial fibrillation may occur, and major organs in the body stop working, declaring clinical death.
"This is going to kill us!"
Two hours later, Fatty Wei's upper and lower teeth began to chatter and rattle.
"Squat down!"
Tong Zhi issued another command.
This time, the entire team moved slower.
Many people no longer want to squat down as they did the first few times, and hesitate there, saying that they don't want to be immersed in water again.
Because the person was shivering due to the mountain wind, he suddenly dipped into the water again. The temperature in the water seemed to be a little higher than above the water surface. The moment he squatted down, he felt a sense of warmth.
But this kind of warmth does not last long, and you will have to stand up again soon. The mountain breeze will make you feel colder and more uncomfortable.
"Five Dynasties Rivers, Mountains and Winds"
Squatting down and standing up repeatedly in the water is simply a kind of torture.
It's already early morning.
The temperature in the mountains dropped rapidly.
The temperature difference between day and night here can reach nearly 20 degrees.
There is still fog in the mountains at night, what a feeling...
Simply sour and refreshing!
"Wang Fang! Why don't you squat down! Squat down! Squat down now!"
Li Zheng turned his head and looked towards the place where the sound came from. It was about ten meters upstream of him. It might be the second row of soldiers.
The instructor's flashlight shone on Wang Fang, who was unwilling to squat down.
Wang Fang leaned against the wall, a little at a loss.
"Squat down!"
The instructor yelled.
Li Zheng saw clearly that it was the instructor named Jin Weiheng, the one who came from the Thunder God Commando Team.
"I'll give you five seconds. If you don't squat down, you will be disqualified from the selection!"
Wang Fang leaned against the wall of the ditch. Under the light of the flashlight, Li Zheng saw that his face was full of panic and his cheeks were twitching as if they were trembling.
"I don't have a choice! I want to quit!"
Finally, he chose to give up...
Everyone's heart sank.
Li Zheng had never seen anyone withdraw from training before.
Wang Fang was the first person he witnessed giving up.
This gave him a huge psychological impact. He persisted desperately, but some of his other comrades in the ditch chose to quit.
He was confused for a moment.
What am I holding on to?
Seeing that Wang Fang had chosen to give up, Jin Weiheng stretched out his hand to pull him up from the ditch.
Wang Fang was obviously so cold that he developed some symptoms of hypothermia. He was dragged to the concrete road and could not get up for a long time.
Jin Weiheng pointed to the security truck not far away: "Go there to get a thermal blanket and ask the squad leader there for a cup of hot milk."
Wang Fang lay on the ground and did not move.
Not long after, he suddenly covered his eyes with his hand and started crying.