Six minutes is Ye Jian's limit, but for many people, six minutes of underwater hypoxia has already lost their lives.

Big shark sighed in his heart again, and then he collected his mind to carry out the second test. No matter how powerful she was, she would not belong to the Navy or the stormtroopers.

However, it is an exciting thing whether she belongs to her own army or not that female soldiers can surpass male soldiers.

Ye Jianna knew the tumbling in her heart. She came out of the test room and quickly adjusted her body state to enter the high C02 tolerance and adaptation test.

This is the training that frogmen must learn, and it is also a must for selecting members of stormtroopers.

"This is our form of C02 tolerance training. Take a look at it." The chimaera, accompanied and recorded in the whole process, stood in the clear water and said to the ready Ye Jian: "the body rest time decreased by 15 seconds, while the breath closure time remained unchanged. We have a 30 minute test, and you may feel a little uncomfortable, or even have a physical reaction of nausea and vomiting. "

"There is a coral island below, you need to dive into its bottom, which is about 15 meters away from the sea. Remember Ye Jian, we need to record your best personal performance, as well as your worst performance. I'm going to find out in thirty minutes whether you've passed the average. "

High 2 is a dangerous test of diving into the sea without any air source. When Ye Jian dives into the sea with one breath closed, she closes her eyes tightly and keeps swimming like a fish into the coral bottom.

The oxygen content in the blood began to be low, and the high concentration of carbon dioxide gradually made the body feel uncomfortable. The twitching diaphragm muscle began to Tell ye Jane that she needed to breathe, and she needed to go up to the water to get oxygen.

Relax, relax, and the body must relax. Let your body and mind not be afraid of the gradually increasing content of 2 in your body. Listen to the sound of water, feel the joy of fish swimming around, and avoid being disturbed by fear and other factors. Ye Jian only rises rapidly when the blood oxygen content is low to the limit.

"The rest time should not be too long, otherwise the accumulated C02 will be discharged from the body due to the long enough rest time, and the purpose of accumulating high C02 will not be achieved. Once the surface is over 30 seconds, the cumulative effect of C02 is very bad. Ye Jian, you need to control your breathing within 20 seconds and then dive into the sea again. "

Big shark's very strict voice constantly reminds Ye Jian. With a timer in his hand, he will wait for Ye Jian to breathe again and dive into the sea, and his face will be dignified.

20 second breath is actually harsh for a recruit, but he really wants to know whether Ye Jian can surpass the recruit again, and adopts a 20 second breath with a slightly larger risk factor for the recruit.

It's a little dangerous for recruits to breathe in 20 seconds, but it's a long time for stormtroopers to breathe in 20 seconds.

In the whole process of breathing, each breath will exchange the gas in the vital capacity. After 15 seconds' rest, the frogman immediately enters the next round of high C02. After several rounds of tests, the giant shark finally thinks that it is feasible and conservative to give the leaf Jane 5 seconds more.

Dive into the bottom of the sea 15 meters in one breath, and Ye Jian, who has been holding her breath for 2 minutes, rushes up again to rest for 15 seconds. After 30 minutes of cycling like this, after the whole test, she feels that her whole body strength seems to be evacuated.

Big shark looked at the female soldier who was wet, tired and proud. Then he looked at the record on the form. The Adam's apple was very light and slipped up and down a few times It's a record that's enough to surprise their teammates.

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