What caught his eye was a sight that made Fang Xing incredulous, thinking that Zefa would bring him here for some reason.

But I didn't think about it, it was just an ordinary room, or even an empty room, with nothing to do, no exercise tools, no measuring instruments, just an empty room.

"Here?" Fang Xing couldn't help but question.

Zefa just replied blandly, "Yes." ”

Of course, he knew why Fang Xing had this question, and explained: "This is the room where you train, you don't need complicated equipment, and you don't need to exercise skills, and then your task is to simply exercise physical fitness, frog jumping, sit-ups, push-ups, you can do whatever you want, I only have one request." ”

Fang Xing didn't object after hearing this, he also knew that his current body was too weak, and his physical skills were only disguised by his ability, so he just looked strong, if he lost the advantage of his ability, he would also become the so-called five scum of battle, and after his physical skills were improved, the power attached to it would naturally increase.

Because the effect of force is mutual, when the improvement of his physical skills leads to the increase of fist power, it will also make a series of reactions and stops increase, and when the direction is changed and blessed to the fist, the strength can naturally be increased exponentially.

Wait quietly for what Zefa will say next.

"You can't use the ability when you're exercising, and once you use the ability, you lose the original purpose of letting you exercise."

Fang Xing nodded silently, and Ze Fa closed the door to the room.

Suddenly, above the floor of the empty room, a number of small stripes were cracked, and from them came the sound of "buzzing...".

Subsequently, Fang Xing felt a burst of discomfort, his body showed symptoms of dizziness, nausea, and fatigue, and a feeling of weakness came from his breathing, and his consciousness gradually became hazy.

"What is this?"

"When this room is closed, it adjusts its own oxygen concentration, which is normally 21 percent in the air, but in this room it is only 10 percent. When the human body is deprived of oxygen, it will naturally fall into a state of fatigue, and when you overcome this difficulty, your body will further stimulate its potential, so as to tap the potential of the body. ”

After listening to Zefa's explanation, Fang Xing showed a sudden expression, no wonder his body had this condition, it turned out that there was a lack of oxygen.

"Reflex" is only able to expel harmful substances, but cannot replenish them, that is, when the body lacks certain elements, it will still react.

But in this case, it is difficult to even move the body, let alone exercise. Fang Xing panted roughly, desperately trying to inhale oxygen into his lungs, but it couldn't be relieved.

Zefa didn't urge Fang Xing to exercise, just looked at Fang Xing's embarrassed appearance indifferently and didn't say anything.

As time passed, Fang Xing's body slowly couldn't support it, and fell to the side, subconsciously using his ability to support his body, although his consciousness was blurred and he couldn't calculate effectively, but the calculation that barely supported his body was what he could do.

Zefa frowned and said, "Remember my request, even if you fall, you can't use your ability." ”

Normally, even Zefa couldn't detect whether Fang Xing was using his ability or not.

But at this moment, Fang Xing was standing in a posture of losing his balance, a posture that could collapse at any time, but it did not have any impact on his body.

Hearing this, Fang Xing silently stopped calculating and let his body fall to the ground.

He now felt that it was difficult to even say a word, and for the first time after stopping the use of his abilities, he really realized that his body was so bad.

Zefa looked at Fang Xing who had fallen to the ground, leaned against the wall, and spoke slowly.

"In this world, there are three ways to become a strong person, fruit, domineering, and physical skills. Among them, the fruit, naturally refers to the devil fruit, you should be no stranger to this ability, it can be said that the fruit is the easiest way to become a strong among the three, superhuman, animal, and natural three series of fruits, once eaten, it will have a certain special ability, and it will have an advantage in the battle with others.

Followed by domineering, the fruit ability is especially the most tricky in the natural system, after eating the natural fruit, the body can be elementalized, if there is no sea water and sea floor stone, it can only be captured by domineering users, and domineering is based on physical skills. ”

Zefa paused for a moment before continuing to speak solemnly.

"Finally, there is physical art, which is also the most important of the three, to put it bluntly, it is physical exercise. In this world, the potential of the human body is unlimited, and it is our hard work that is responsible for tapping this potential. It can be said that a strong person does not necessarily have a top physical fitness, but a top strong person must have a strong body. ”

Fang Xing, who fell to the ground, silently listened to Zefa's eloquent conversation.

Although his consciousness is a little blurred, at least he still maintains his sanity, and he agrees with Zefa's opinion.

Zefa, as the spokesman, sighed and said: "Although I am very unwilling, the physical development of that guy Karp is indeed the pinnacle of this field." Remember, boy, the human body is the most valuable asset, don't be like one of my stupid students, rely too much on ability, in the battle of the same level, sooner or later he will harm himself. ”

Dumb student? It refers to Polusalino, that is, the yellow ape. But even if Zefa said so, the yellow ape's physical skills are not weak, and the guy who can fight with Reilly in swordsmanship will not be weak no matter how he thinks about it, and the weakness he said should refer to people of the same level.

Zefa yawned and said: "Well, but you may not understand it, you better think about how to exercise in this room first, I'll sleep for a while, there is no need to deliberately pretend to be strict in front of Karp's grandson, it's really troublesome to teach other navies to pretend to be like that, and sometimes I envy Karp's freewheeling guy." ”

Then in front of Fang Xing's eyes, he lay on the ground and rested.

This bastard!

Fang Xing shouted in his heart, saying that he would supervise and train alone, but the result was to lie aside and rest, leaving him alone to endure this environment.

Adjust your mentality, in short, you must first overcome the current problem.

But every time you take a breath, your body will be more tired, and you must adjust your breathing first.

Fang Xing slowly slowed down the pace of his breathing, but a tightness came from his chest and lungs, allowing him to hold on for a while before returning to his previous state of wheezing.

His body couldn't adapt yet, even if he knew that he could adjust his breathing to get used better, but he couldn't.

Subconsciously, I thought that if I could use my power, I would be able to gather oxygen around me.

Quickly shook his head and dispelled this thought, he can't rely on ability again, this thought is not allowed when exercising, he must face up to his physical exercise.