In the 4th lap, Lin Chen had already sensed that the oxygen consumption of the body's cells had further increased, and the normal beating of the heart was Hr 70 times/second, and after 3 laps, Hr 160 times/min, which had more than tripled.

The energy consumption has reached 170 kcal, and the oxygen uptake of breathing is 50 ml/kg/min, which is obviously a bit of insufficient oxygen uptake?

Lin Chen was thinking, if he continued to run at this pace, he would definitely collapse and fall on lap 5, how to change this turn so that he could continue to run?

After the 4th lap, there were only 40 recruits left on the training ground, and because Lin Chen's pace slowed down, some recruits said dissatisfiedly: "You soldiers from there, you just offended this Xiao instructor?

"I'll just say you're tough, what's wrong? Can't finish 3km? Or go down," said another recruit.

"He's hard-mouthed, and now he finally knows that trouble is coming."

"Don't laugh at him, he's already doing a good job, and I'm betting he's going to fall in 1km at most," said another burly recruit.

Lin Chen looked at these recruits who came to the barracks together, although they didn't know each other, among all the people here, maybe he was a little older, but the strength of not admitting defeat in his bones ignited the fire again, 10 kilometers, right, I'm a medical student, I know everything about all parts of the human body, and I'm afraid that I won't be able to run? I'll show you people after I run, but even if I run to the end, I will insist on finishing.

Lin Chen ran without saying a word, he began to adjust his breathing rate, turning the originally slow-paced breathing into deep and short, and exchanging the oxygen inhaled into the lungs with the pulmonary veins as much as possible, so as to increase the storage of oxygen to maintain such a high level of oxygen consumption.

On the other hand, the foot has been changed from a step-like way to a toe landing, so that the more elastic rhythm further increases the distance of a step;

In the end, he did not run with his head down, when he ran with his head down, his body was leaning forward, looking at the ground was not conducive to such training, only by raising his head, the whole body breathing was also best improved;

Lin Chen's hands became much more regular than before, and he finally adapted the situation of his whole body to such training.

His stride was already bigger than before, and slowly he kept up with the recruits who had surpassed him.

At this time, the black wolf looked at Lin Chen and said to Xiao Li: "It's been 4 laps, it seems that the physical energy has been consumed a lot."

"It's a big step and it's just a death struggle, but I'm curious if he can make it to the end, I'll be satisfied with the finish of the race, and I don't set a time limit for him to finish 10 laps."

"I don't know if Lin Chen knows your careful thinking, it seems that he wants to compare with those recruits."

Xiao Li's heart suddenly became anxious, and he scolded: "You bastard, run like this, can you still hold on to the end?"

Lin Chen, who was on the training ground, instead of flinching, aroused a stronger fighting spirit.

He said loudly in his heart: "I, Lin Chen, came here to break your records, so let this moment be my first achievement in the barracks."

His legs were already a little light, but with the blessing of Lin Chen's will, he continued to step forward according to Lin Chen's consciousness, and after a while, Lin Chen once again surpassed the recruits who were still taunting him just now.

These recruits were still laughing at Lin Chen, but they didn't expect this bull to catch up.

"Brother Lin, if you go on like this, you won't be able to run anymore when your body is exhausted, don't run like this," a recruit said with concern.

"He will definitely fall in less than 5km like this."

"You're embarrassed to say that you've run behind the others, why don't you walk over?" said another recruit.

5 laps, 5km, at this time there were a few recruits who couldn't run down, these recruits sat on the training ground and said loudly: "I can't do it, I quit", and was immediately carried out of the training ground by the soldiers present;

Lin Chen has already run 5 laps, 5km, everyone is looking at him, I really didn't expect Lin Chen's small body to run 5 laps, and 5km has not yet fallen.

Xiao Li, who had already done it and asked the medical soldiers to prepare to treat Lin Chen, stared at Lin Chen with big eyes at this time, and she looked at Lin Chen who was still running in the training ground in disbelief.

After 5 laps and 5km, Lin Chen's legs have become more light and fluttering than before, and the anaerobic consumption of the muscles has increased, which makes him very uncomfortable.

He glanced at the other recruits behind him, and continued to move forward at the same pace as before.

Xiao Li scolded in a low voice at this time: "Are you really a fool?

On the 6th lap, among the remaining 30 recruits, ten more recruits stopped, looked at the endless track and cried bitterly: "I knew it was so hard, I would have said I wouldn't do it in the morning."

And their fate is still to live in a guest house and return to their original place.

6 laps, already half of the run, the sweat on Lin Chen's face fell like rain, the energy consumption of his body has reached 390 kcal, Lin Chen knows that this is not his limit, the oxygen uptake of the lungs has risen to 70 ml/kg/min, which is enough to meet the needs of the body, and the rest of him as long as he is strong-willed, even if the pace slows down a little and the energy consumption is reduced, these ten laps are just right for him.

He gritted his teeth and continued to run until he finished lap six, and by lap seven, five of the 20 recruits had been eliminated. And Lin Chen did not get a big distance from the other recruits behind him in the 7th lap.

Seven and a half laps later, Lin Chen threw the recruits behind him out of a distance, the soreness of his legs made Lin Chen very uncomfortable, he really wanted to stop, but when he thought that the tigress was still looking at him, how could he stop at this time, and be laughed at by her? Didn't this tigress say that she was waiting for him?

Lin Chen took a deep breath, at this time, his will had already decided whether he would be able to run the last player of the ten laps.

8 laps, 8 and a half laps。。。。。。

There are only 10 recruits left on the training ground.

9 laps, 9km, and there are only three people left who are still holding on.

At this time, Xiao Li didn't know the anger that came, she ran over and shouted at Lin Chen, who was already physically and mentally exhausted: "You bastard, are you walking or running?

The black wolf said: "He can hold on to the present day, he has reached the limit, you are provoking him to hurry up will only make him fall faster, let the medical soldiers prepare."

Lin Chen was indeed angered by Xiao Li's words, didn't he just kiss you, is it necessary to be ruthless like this?

He gritted his teeth again and dragged his legs forward, which were no longer his own.

The 10th lap was finally coming to an end, and what Lin Chen wanted most at this time was to lie directly on the training ground.

His mind kept answering, ten laps, rushing over, there were still 500 meters left, and his legs were no longer controlled by his consciousness.

"Lin Chen, there are still 500 meters left, give me a full speed to rush forward."

The two recruits behind him were also exhausted at this time, but they were encouraged by Lin Chen's death to continue to move forward.

Finally 10 laps and 10km completed. Lin Chen couldn't take care of it anymore and lay down directly on the training ground.

Xiao Li finally breathed a sigh of relief, only to see a satisfied arc on the corner of her mouth and smile: "Congratulations, continue tomorrow."