Kunshi, Sanqing headquarters.

At nine o'clock in the evening, on the path by the river, there were several figures stretching their bodies, spreading their legs, and running panting.

Xue Shen is also one of them, but he is a bit older, over 30, and his running speed is slower and the time he can last is shorter.

After running for three to five hundred meters, he had to stop and rest for a while. His chest heaved violently, and he gasped for air. His lungs felt like they had been torn apart by a ferocious beast, and he was extremely uncomfortable.

After finally running a thousand meters, he was sweating profusely and dizzy. He struggled to sit on a bench by the roadside and couldn't get up.

"Xue Bo, your physique is not very good. You can't run after running for such a short distance? It seems that you need to exercise more."

The familiar colleague joked with a smile, then waved his hand, the wind blew under his feet, and he disappeared in an instant.

"You... brat, you actually came to show off in front of me."

Xue Shen was ashamed and annoyed, but he was getting older and his body was out of control, and he had neglected to exercise in recent years. He was either in the laboratory or working hard in the office every day, so naturally he couldn't compare to a young man in his early 20s.

"No, I have to run at night every day and exercise well so that I can't lag behind others. My body is the capital of my work, and I don't want to die suddenly one day while I'm working."

He comforted himself, slowly adjusted his breathing, and finally stood on the track again.

Just like that, I ran and stopped, and finally finished the 5 kilometers before ten o'clock.

Xue Shen returned to the dormitory, sweating profusely, as if he had been fished out of the pool, but he was very happy in his heart.

I finally ran down today, and it didn't seem to be too difficult. Although I was sweating, I felt strangely comfortable.

As long as you run every day and stick to it, your body will definitely regain the energy and strength it had when you were young.

He took a shower at the speed of light, lay on the bed, and fell asleep while reading industry news.

The next day, when the first ray of sunshine in the morning shone into the room, Xue Shen opened his eyes and jumped up happily.

Ah~

Unexpectedly, as soon as he stood up, he felt sore all over his body, especially when his legs stepped on the ground, it hurt like a knife.

He couldn't help but let out a heartbreaking scream!

"Ah~"

"Gan! It must be that there is too little exercise in daily life, the leg muscles are overused in a short period of time, and the lactic acid accumulation produced by the long-term anaerobic state cannot be tolerated, which leads to severe pain."

Xue Shen's mind was spinning, the stored knowledge burst out, and he instantly understood what was going on.

"Damn it, it seems I need to rest in bed for a while." He complained in his heart, and quickly searched on his mobile phone, and followed the online prompts to give himself a leg massage.

After pressing for about ten minutes, the pain in my legs eased a little, and I was finally able to get out of bed and walk around.

Although my legs were still as heavy as lead and felt a little numb from time to time, at least the pain was not as severe.

"Damn lactic acid, I just ran for a day, why did it accumulate so badly?"

He thought angrily: "No, I have to solve this problem, otherwise I won't be able to run at night anymore."

"I can't run for two days and rest for three days. That's useless. Besides, I'm not a professional athlete. I can't just run and find a coach to guide me on how to do recovery training."

"Anaerobic exercise, lactic acid accumulation, anaerobic exercise, lactic acid accumulation..."

All the way to the laboratory, Xue Shen was still mumbling these two words.

It wasn't until he was sitting at his desk that an idea suddenly flashed in his mind.

"By the way, since anaerobic exercise easily produces lactic acid, and the accumulation of lactic acid can cause muscle soreness."

"Then this is nothing more than a problem caused by insufficient oxygen supply in the body. As long as I solve this oxygen supply problem and provide sufficient oxygen to the body, won't it be completely solved?"

"If the problem is discovered, how to solve it?"

"When running, the body needs a lot of oxygen to support muscle movement. This demand is fixed and cannot be changed. It can only be improved from other variables."

"It is known that my cardiopulmonary function is fixed. Unless the gene mutates and turns into shark lung, there is not much room for improvement. And if I want to adjust the breathing frequency to improve it, I have to seek help from a kinesiology expert. The process is too cumbersome and time-consuming.

It’s been too long.”

"So, assuming the volume of gas inhaled in one deep breath remains the same, how can we increase the oxygen content?"

"There seem to be two ways. One is to increase the oxygen content of the gas. I remember there was a portable oxygen bottle. I want to see if I can buy one and wear it when running. It should be able to increase the oxygen intake."

However, when Xue Shen thought of the scene where he was carrying an oxygen bottle and sucking in oxygen while running.

Another picture emerged in his mind.

Several colleagues gathered around, looking at me strangely, looking up and down with malicious eyes, and making bursts of ridicule.

"Hey, Director Xue is only in his early 30s, why is he so weak?"

"Hahaha, you even carry an oxygen bottle when running at night. Isn't this too exaggerated, Xue Bo?"

"That's right, you are a bit premature. Look at this 70-year-old man dancing in the square for half an hour without blushing or out of breath."

"Breathing oxygen? Are we moving to a 5,000-meter plateau overnight?"

"Hahaha~"

More and more colleagues gathered around me, and their laughter became more and more arrogant.

Even Mr. Wei was alarmed and cast a suspicious look.

"Xiao Xue, are you in such bad shape? You're too tired. You should pay attention to rest."

"You don't have to worry about work. I think your teammate Xiao Zhou is quite capable. Why don't you leave it to him first and you can go home and rest for half a year?"

"What? Are you in good health? Then why are you taking oxygen while running? Is there any illness you are hiding from me?"

Such a social death scene instantly made Xue Shen's body tremble, and he immediately gave up the idea of ​​taking oxygen in public.

"No, if you want to take oxygen, you can only take it in advance and then run. Otherwise, you will definitely be laughed at by your colleagues."

"But it's useless to inhale in advance. Hemoglobin's ability to carry oxygen is limited."

"Unless..." His eyes suddenly lit up and he stood up abruptly.

"Unless I can find a nanoparticle that has an oxygen-carrying capacity that far exceeds that of hemoglobin, even daily breathing can provide sufficient oxygen to meet the oxygen needs of muscle tissue, so that my body will never feel tired again."

"This is a once and for all solution!"

"And I'm very tall. You can't tell from my appearance at all. My colleagues will only think that I have great physical fitness. It's awesome ps."

I thought of myself running so fast on the runway, riding so fast, leaving only an elegant silhouette that looked like a lake.

Colleagues were left far behind and could only exclaim in waves and cast admiring glances.

Xue Shen suddenly felt itchy, wishing he could research this magical nanoparticle right away and give himself a tube on the spot.

"Fortunately, nanoparticles are my research field, and there are many substances with strong oxygen-carrying capabilities. If I study them carefully, it shouldn't be too difficult."

He turned on the computer with excitement and began to study relevant literature.

After doing this research, I became fascinated instantly.

Time flies, the sky outside the window gradually darkens, and the lights in the room automatically turn on.

“After reading the information for a day, I learned a lot.”

"Research on biomimetic nanomaterials for oxygen transport in the body is now quite popular in the industry. I read a lot of literature and finally got a clue."

Xue Shen stood up from the computer, stretched slowly, came to the window, looked far into the distance, and fell into deep thought.

The blood of the human body is very hard, not only transporting various components necessary for the body, but also transporting a large amount of oxygen required for survival.

After all, the human body obtains the energy it needs through redox reactions, and oxygen is the lifeline of the human body.

Red blood cells are carefully designed to carry out oxygen.

In order to achieve maximum efficiency, red blood cells discard all components of traditional cells and are composed almost entirely of hemoglobin.

A red blood cell contains 250,000 hemoglobin molecules. Each hemoglobin with a diameter of 5.5 nanometers has 4 card positions and can accurately carry four oxygen molecules.

Essentially, red blood cells are a container that holds oxygen inside and transports it to various parts of the body.

It does not use oxygen itself, but instead uses glucose to meet its energy needs.

However, hemoglobin also has a shortcoming, that is, it prefers carbon monoxide much more than oxygen.

If carbon monoxide is present, the hemoglobin will carry it away like a passenger on a rush hour train, leaving the oxygen on the platform. This is why carbon monoxide suffocates people to death.

At the same time, red blood cells use nitric oxide as a signaling molecule, which basically determines how much blood is distributed to which parts as the body's needs change at different times.

For example, after a meal, sufficient blood is provided to the stomach to aid digestion, so generally the brain will feel sleepy after a meal, which is caused by insufficient blood supply to the brain.

At normal altitudes, red blood cells occupy 40% of the blood volume. This large and regularly operating system can meet the body's oxygen needs under normal circumstances.

Of course, under abnormal circumstances, some accidents will definitely happen.

For example, if you go to a high-altitude area, your body will work overtime like a factory, producing a large number of red blood cells and increasing the oxygen-carrying capacity of the blood.

In this way, after staying at the plateau for a period of time, the proportion of red blood cells in the body will increase by about half.

Such a high red blood cell content causes the blood to become thick and sluggish, causing the heart's pumping pressure to increase dramatically. The lips begin to turn purple, and the fingers become as thick as mallets, leading to a special disease.

But as long as you move to a lower altitude, the problem will disappear.

Of course, there are more problems such as excessive exercise leading to lactic acid accumulation.
To be continued...