"Five hundred laps, running upside down..."

"If you can't do it, do a thousand push-ups"

"Youth did not give up!"

As soon as he approached the exercise ground, a green shadow appeared in front of him, conducting physical training.

Seeing this scene, Uchiha Kyo smiled, thought for a moment, and walked over.

"Kai Senpai" is wearing green clothes in front of him, with a watermelon head, and he looks a little funny, it is none other than Maitkai

"Yo, Kyo!" Hearing this, Maitkai immediately rolled over and stood up, revealing a smile that he thought was enthusiastic

Looking at Maitkai's white and shiny teeth, Uchiha Kyo smiled, "Long time no see, Kai-senpai!" ”

"Ahaha, it's been a long time, Kyo," Maitkai smirked

"Let's practice together, Jing," Maitkai warmly invited

"Okay, together," he nodded, and Uchiha Kyo agreed.

After the two of them finished training, they sat on the ground together to rest, and by this time it had been an hour.

Handing over a bottle of water and looking at Maitkai sitting on the ground, Uchiha Kyo spoke:

"Kai senior, we've known each other for four years." Uchiha Kyo and Maitkai have known each other for a long time, Uchiha Kyo began physical training at the age of four, although it was not a special contact, but the village is so big, it is inevitable to meet Maitkai father and son, and sometimes they train together.

Kai spared his head with some embarrassment: "Has it been four years?" ..... Ahaha, it's so fast" Kai knew that the two had known each other for a long time, but for how long, he didn't have a concept in his heart.

Putting aside the water bottle after drinking, Uchiha Kyo stood up and said formally, "Although I've known each other for four years, I've never fought Kai-senpai."

"Take advantage of today's opportunity to hand it over. How is it? ”

"What? No, no, I'm already a ninja, you're still a student" Kai was a little embarrassed, Uchiha Kyo was the one in the village who rarely identified with their father and son, and Kai didn't want to hurt him.

"So, does Senior Kai look down on me as a student and disdain to fight with me?" At this time, Uchiha Kyo's face was indifferent, and his tone was full of impatience

Kai hurriedly waved his hand: "No, no, I'm not this..."

Before he could finish speaking, Uchiha Kyo interrupted him and said with an extremely serious expression: "Just like Kai's predecessor used to say that he wanted to fight with a genius, I have always wanted to fight with my senior."

So Kyo has always regarded me as an opponent? Kai was a little moved, and immediately felt full of vitality in his body, and then got up and gave a thumbs up: "So this is youth?" Come on, Kyo, let me see your youth! ”

"Be careful, Kai-senpai" Before the words fell, Uchiha Kyoshi turned into an afterimage and rushed forward.

"So fast!" Kai Shin said, flashing sideways, avoiding Uchiha Kyo's fist, and then turned around and threw a punch

"Bang"

A dull sound sounded, and I saw Uchiha Kyo's right hand tightly grasp Kai's fist and said coldly

"Seniors, please show your strength, or is it just that the youth of your predecessors is just like that?"

"It's worthy of Jing, let you see my youth!" Seeing this, Kai immediately became serious

"Be careful, Kyo!" Drawing his fist, Kai whipped his leg, tore through the air, and kicked him hard.

Bang..

Blocking Kai's leg with one hand, he grabbed him and slammed him to the ground.

Kai reacted quickly, immediately propped his hands on the ground, turned over, and just got up, he saw Uchiha Kyo rushing over.

Bang bang bang ...

You punched, I kicked, and the two of them fought back and forth here

Kai is fighting very happily at this time, punching to the flesh, hearty, this is the duel of physical skills, this is the taste of youth, fighting, Kai gradually let go of himself and released his full strength.

"Kai is far from being my match now" Uchiha Kyoto thought as he dealt with Kai's attack, and he hadn't used any chakra yet.

After all, the duel of physical skills is simply two points: strength and speed.

How powerful is Uchiha Kyo right now? How fast?

Take humans on Earth as an example, Tyson's fist power at the peak of his previous life was 224 kilograms, one punch could kill a sturdy bull, theoretically it could also penetrate a 20cm stone wall, and Bolt's speed could reach about 10.4 meters per second.

What about Uchiha Kyo? At the age of 5, the physical fitness is 5-6 times that of the adult strong man in this world, and when converted into a human in the previous life, I am afraid it is more than ten times.

Even if he doesn't use any chakra, he is a proper little superman based on his physical fitness alone.

In terms of strength, he only uses one little finger, under the weight of 200 kilograms on his body, he can complete 100 standard push-ups in 1 minute, five fingers and a pinch, the solid shot put can be pinched into pieces, and a punch can punch the ground into a pit.

In terms of reaction speed, you can catch the kunai thrown by the shadow clone with your bare hands, and in terms of body speed, you can also jump to dozens of meters with a gentle jump.

At this time, Kai is not the strong elite ninja more than ten years later, after all, the strength of the physical ninja is closely related to physical fitness, less than ten years of training and polishing, plus Kai's body is still in the development period at this time, not mature, so now it can only be regarded as a very powerful physical ninja.

Kai has to enter his peak period after the end of puberty and his physical development is complete, and his strength has increased greatly.

The battle between the two continued.

On the scene, the two looked evenly matched.

Kai became more and more excited at this time, and his speed became faster and faster, and after knocking off Uchiha Kyo with one punch, he immediately rushed up while he was unstable on his footing.

"Konoha Whirlwind!"

Swish...

The tremendous force tore through the air, turning into a fierce gust of wind and slamming into Uchiha Kyo, blocking all his dodge space.

In the face of this fast and powerful attack, Uchiha Kyo did not back down, but stood on the ground, took a deep breath, and blasted out with a heavy punch, the force was much greater than the previous fight.

Rumble...

The violent collision between the fist and the leg produced a loud noise, and a green figure bounced out and fell heavily to the ground.

Lying on the ground, Kai was already a little suspicious of life, and he couldn't even beat a student.

Seeing this, Uchiha Kyo immediately stepped forward, stretched out his left hand to him, and said, "Kai-senpai, are you okay?" As he spoke, Uchiha Kyo's face pretended to be pale and his whole body trembled slightly.

Kai was a rough nerve after all, and immediately put away his depressed face, took his hand, and said loudly: "It turns out that Jing is so powerful!" I must work harder to catch up with you, I have decided, I will double my training today, youth will not allow to admit defeat"

After finishing speaking, seeing that Uchiha Kyo was pale, holding his right hand, he immediately asked nervously, "Kyo, are you injured?" It's all my fault, the shot was too heavy" and wanted to go up and check the injury.

Shaking his head and rejecting Kai who stepped forward, Uchiha Kyo said: "Kai-senpai, I must have also discovered that my last strength was much greater, so Kai-senpai, I was unprepared and fell out"

"Huh? It seems like this" Scratching his head, Kai said, Could it be that Jing still has hidden strength? Looking at Uchiha Kyo, his pale face didn't look like a weak look.

Without waiting for Kaido to think about it, Uchiha Kyo directly opened his mouth and said: "This is a skill that I have recently mastered, which can temporarily improve physical fitness, I call it ..."

"Body lock!" It's not Uchiha Kyo bragging, although he didn't use this technique in the battle, but he really mastered this technique.

"Body locks?" Kai wondered

"Yes!" Nodding, Uchiha Kyo continued: "The power of physical skills is closely related to the strength of physical fitness, how to improve physical fitness?" Nature comes from our usual physical training that makes our bodies faster and stronger. ”

"Presumably Kai's predecessors also know that no matter how we train, our bodies actually have a limit value, and we can only do a hundred push-ups, but under the influence of some reasons, we do one hundred and fifty."

Kai nodded, he himself is like this, many times he feels that his body can no longer support it, but under the psychology of not admitting defeat, he has done more, and fortunately his physical talent is extraordinary, otherwise normal people would have been abolished long ago.

The human body has a limit, but in some cases, the rapid secretion of certain hormones in human beings has the potential to explode and break through the limits of the body.

More than a little, fortunately, it will not cause too much harm to the body, but it will be beneficial, just like athletes on the field, because of the desire for honor and victory, the results often exceed the results of the usual training.

If you exceed too much, for example, in the face of the fear of life and death, people with strong obsessions can stimulate the potential ability of human beings and create all kinds of incredible miracles, but then they will bring great harm to the human body.

For many years, Uchiha Kyo has been in the limit for a long time every time he trains because of the characteristics of the overlord reloading to recover 3% of his life per second, and after another 2-3 seconds of his body, he will be directly exhausted and faint to the extent that he falls to the ground, but because he recovers 3% per second, he can continue to train and will not faint to the ground after 2-3 seconds.

If a person's normal physical condition only allows him to run 8,000 meters, driven by will, he can run 10,000 meters, but if he runs 12,000 meters, he will faint, and 15,000 meters may even be in danger of sudden death.

Normal people may not be able to run 12,000 meters in their lives, and even some lazy people can run 8,000 meters physically, but it is good to run 3,000 meters.

And what about Uchiha Kyo? When he was fine, he trained at least 16 hours a day, 15 of which put his body in a state where he was about to faint. Over time, I naturally mastered a technique that could be turned on at any time to explode the potential of the body.

In this state, the strength of his body is greater, the speed is faster, and the reflexes and control are more keen, much like the gene lock mentioned in a novel he read in his previous life, in order to make it easier for Kai to understand, so he called it a body lock for Kai.

The body lock sounds very similar to the Eight Gate Dun Armor Gate Forbidden Technique, but the two are not the same thing, the Eight Gate Dun Armor temporarily obtains a powerful Chakra by unlocking the passage that binds the chakra in the human body, and bursts out with dozens of times the power.

Although he also has high requirements for physical fitness, the body lock has nothing to do with chakra, but simply unravels the physical limitations, in this state, he will secrete adrenaline rapidly, his heart and breathing will accelerate, blood flow will increase, and blood sugar will rise, thereby enhancing his body strength and improving reaction speed.