I don't know what kind of effect this kind of comprehension has on the mind and consciousness, and I don't know what kind of effect the mind and consciousness have on the body, in short, Xu Guangling only feels that the operation of the Fuxi Jue in the body is deeper and more subtle.

It was as if he had become a small lake, and the sky, or rather the lake, was soaked by a steady drizzle.

It also infiltrated his whole body and mind.

So, Xu Guangling stood in front of the window like this, and before he knew it, it was all night.

After waking up, Xu Guangling determined one thing.

It's also one of the experiences he's been feeling nuanced these days.

At the beginning, the red flower representing the heart, the first flower of the five-color flower, before the flower bloomed, Xu Guangling's perception of the body was very shallow, and it could not penetrate deep into the viscera.

And when the red flowers bloom, the heart becomes the stronghold of his perception.

Then, starting from this stronghold, he sensed the flow of blood, the limbs, and other organs.

When the yellow flower representing the spleen also bloomed, Xu Guangling discovered a little situation.

That is, before blooming, the spleen filters the blood, but it itself seems to be metabolizing very frequently.

In Xu Guangling's feelings, almost every moment, the spleen itself has some subtle impurities flowing out with the blood. According to speculation, Xu Guangling judged that this was the metabolism of the spleen, or cell renewal.

The new ones replace the old ones.

However, his perception has not yet penetrated to this level, so about this, it is only a vague perception, and it is only conjecture and judgment.

And when the yellow flowers bloom, this renewal, this metabolism, is gone.

In addition to the much clearer blood in the body, the spleen itself is also as clear as water, and there are no more impurities flowing out of it.

What does this mean?

On the evening of this day, during the gossip time, Xu Guangling asked this question to Elder Zhang.

"Teacher, how long do individual cells in our body live?" asked Xu Guangling.

Xu Guangling thought that this question should be common sense for the old man, but unexpectedly, with his question, not only Elder Zhang, but also Elder Chen, the two old men all fell silent.

After a long while, Zhang Lao spoke:

"To put it mildly, it's hard to say. ”

"Let me give you an example. An ant nest is generally composed of several parts: queen ants, reproductive ants, worker ants, and soldier ants, but although they are all ants, their natural lifespan is very different. ”

"The queen has the longest lifespan, which can last for more than ten years or even decades. ”

"Male ants have the shortest lifespan of reproductive ants, generally no more than one month. Their job is to reproduce, and once they complete their task, they die immediately. ”

"The lifespan of worker ants and soldier ants is somewhere in between. ”

"The same ant in the nest has such a huge difference in lifespan. ”

Speaking of this, Zhang Lao smiled slightly, "I have done experiments for my teacher. Do male ants, if they are not allowed to reproduce, and worker ants and soldier ants, if they are not allowed to work and fight, in a good living environment, will their lifespan be extended?"

The answer is yes. ”

"Their lifespans have indeed been extended, and they have been greatly extended. ”

"But will it eventually be able to extend its lifespan to the same level as the queen ant? I can't be sure that the environment I've created for them is the best one for them. ”

Speaking of this, Zhang Lao paused.

After about thirty seconds, the old man said, "The situation in our bodies is roughly similar to that of an ant's nest. Or in essence, the two are the same thing, of course, not certain. ”

"In our body, brain cells have the longest lifespan, with us for almost a lifetime. ”

"Heart cells are second, about twenty years. ”

"Why do brain cells live the longest? Subjectively because it is the most important, objectively because it is the best environment in which it lives. I've told you about this before, the blood-brain barrier. ”

Xu Guangling nodded.

The so-called blood-brain barrier, simply put, is the head of the road that supplies blood to the brain, and there is a layer of barrier, just like the security booth at the entrance of some communities, which plays a certain role in guarding and filtering.

Many impurities in the blood cannot pass through this barrier.

What the brain enjoys is "high-quality blood".

The rest of the body doesn't get this treatment.

"The complete opposite is the lifespan of the cells in the small intestine. ”

"Because the battle is on the front line of blood production, the lifespan of the cells in the small intestine is only measured in days, or a day, or a few days, or even less than a day. ”

In addition, the lifespan of cells in other tissues in the human body also varies, some in years and some in months. ”

Speaking of this, Elder Zhang paused again, and then asked Xu Guangling: "Humble words, what do you think?"

Xu Guangling said: "Suppose, if there is also a barrier in the small intestine, like the blood-brain barrier, so that our whole body can enjoy high-quality blood like the brain, then will the lifespan of the cells of various tissues in the human body be extended, to the same as the lifespan of brain cells?"

Hearing this, the two old men laughed.

And Chen Zhihe listened honestly or quietly on the side.

"When you die, the brain cells don't die. ”

"If you can create an environment that is suitable for it, how long can brain cells survive?"

"I don't know. ”

"Maybe minutes, maybe hours, maybe days, maybe months, maybe years, maybe decades, maybe hundreds of years, maybe ...... Longer. ”

"The only thing we know for sure is that brain cells live longer than our entire body. ”

"Why is the lifespan of the whole body short?"

"Just because the environment in which it lives is not as good as the brain. ”

"Therefore, to improve the body's environment is to increase life expectancy, and the first thing is diet. ”

"Improving the diet means improving the environment of the small intestine, which can make the cells of the small intestine survive longer and metabolize less frequently. The body's expenditure and burden in this area will also be reduced. ”

"At the same time, improving the diet, that is, improving the blood, improving the living environment of all tissue cells in the body. ”

So there is such a sentence in the ancient book. ”

"If you want to live forever, your belly must always be clear. ”

"That's why many doctors and health pharmacists in ancient times have tried to 'Bigu'. ”

Bigu, that is, skipping meals.

or go without food for three days, or go without food for five days or seven days, or for a longer period of time.

Of course, there are also short ones, a day or two or even one or two.

For example, there is such a description in "Dream of Red Mansions": "The customs and secret methods in this Jia house, no matter up or down, only have a slight cold and cough, and the main thing is to clean hunger, and the second is to take medicine to recuperate." ”

Net hunger, that is, starvation for two or three meals.

"Teacher, Elder Chen, have you tried Bigu?" Hearing this, Xu Guangling asked curiously.

"Trying is definitely trying, but it doesn't mean much. Mr. Chen said.

"Bigu is beneficial, but at the same time there are disadvantages, whether the benefits outweigh the disadvantages, or the disadvantages outweigh the advantages, the teacher is still not sure, so after trying for a stage, I gave up. Zhang Lao said.

Xu Guangling nodded.

"Clumsily, why did you bring up the issue of cell life?" The topic was largely over, and then Zhang Lao asked.

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