Chapter 34: Morning Exercise is Right or Wrong

Cheng Ying said incredulously: "The motor nerve center is damaged? What the hell is going on? You two really don't make people worry, that one is just right, and this one hurts like this! ”

Mao Jin raised his head and said, "Sister, it doesn't matter. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info I'm fine now, I'll be fine in two days! Cheng Ying said: "Your big brother is really good!" How did you get hurt like this? ”

Cheng Ying still doesn't know about the attacks on Cheng Xiao and Mao Jin, and if she doesn't ask now, Cheng Xiao and Mao Jin will naturally not say it. Mao Jin smiled: "It's not to blame the big brother, it's just an accident!" Sister, did you have dinner? Tonight's meal is all made by the big brother, why don't you try it too? Cheng Ying glared at Cheng Xiao fiercely and said, "For the sake of Xiao Maojin being okay now and you taking care of her, I won't hold you responsible." ”

Since it was in her own home, Cheng Ying unceremoniously sat down to eat with Mao Jin and Cheng Xiao. As soon as she sat down, she asked again, "I didn't have time to ask you last time in the hospital, where have you been hiding for more than a year?" People are looking forward to the stars and the moon every day, waiting for you to come back! You're good, you'll get into trouble when you come back! Cheng Xiao smiled bitterly: "Sister! My good sister. Where am I causing trouble? I finally had time to come back! Won't you give me some good colors? Cheng Ying said: "You were still quiet when you were young, why are you getting more and more restless now?" Hum! Mao Jin's injury is definitely inseparable from you, if I tell my father! There is definitely your good fruit to eat! Although Cheng Ying has a good relationship with Cheng Xiao, her mouth has always been so "poisonous"! As soon as Cheng Xiao met her, he was always suppressed by her. It's just that in the face of Cheng Ying at this time, he still has a way.

He had a very underwhelming expression, and suddenly said to Cheng Ying: "Sister, how old are you this year?" Cheng Ying replied: "Do you still need to ask?" Your sister is three years older than you! You have to know your sister's age, you just think about yourself! Cheng Xiao said with a smile: "Oh! Sister, if I told my parents that you had blown away my brother-in-law a long time ago, what did you think they would want you to do? ”

"Huh?" Cheng Ying almost jumped up as if she had been shocked. It's just that she reacted then and snorted, "Okay! Xiaoxiao, you threaten me? Cheng Xiao smiled: "Don't dare!" Just wanted to make a deal with you! Cheng Ying thought for a while and said, "Okay!" I'll promise you! Your sister is still young, but she doesn't want to be tied down like this! ”

Mao Jin said seriously: "Sister! Don't you really want to find us a brother-in-law? Cheng Ying "cut" and said, "Those wastes, puss are going to die." Not even your stupid big brother! Mao Jin shook his head and said, "Big brother, he's not stupid!" He's just a little sick! Cheng Ying said: "Okay! Yes! Yes! I won't talk about him! Who in the family doesn't know that you treat your big brother as a baby! Well? Mao Jin, have you read your college entrance examination results recently? Mao Jin shook his head. Cheng Ying smiled: "That's good!" I've got you covered! Mao Jinqi said: "What surprise?" Cheng Ying said: "Our family's literary genius was admitted to the Department of Literature of Golden State University

Finish! Mao Jin said: "Me? Cheng Ying said: "Who else would it be if it weren't you?" Could it be your big brother? He's got that wood! I will only do experiments and do scientific research! Mao Jin smiled: "That's good! Big brother, I can also go to Golden State University for further study! Hearing the news, Mao Jin was very happy, but as soon as she turned her head, she saw Cheng Xiao there silent, and asked, "Big brother, what's wrong with you?" Cheng Xiao said sullenly: "You are all admitted to Golden State University openly. I was the only one who was 'exceptionally admitted' after being named by my tutor! Mao Jin said softly: "Big brother, you said, in fact, these things are not important. The most important thing is to be able to learn what you want to learn. You also said that the purpose of learning is simply to learn knowledge and learn to be a person, and what grades, what scores, and what future and destiny are only secondary. We can't go after the minutiae and go after the most fundamental things. As long as you can learn what you want to learn, you can learn it anywhere! How can you forget what you said yourself? ”

"I ......"

Cheng Xiao was speechless. If when he faced his sister Cheng Ying, he was strongly suppressed by his sister, then he was tied to Mao Jin. Although he was speechless when asked by Mao Jin, he was still a very open person. There was such a small episode, although the atmosphere froze for a while, but it quickly eased up, and the three of them had dinner together. There may not be many scenes in this world that can be as harmonious as this!

Cheng Ying has been busy with business recently, and now she can finally go home and steal a leisure. Therefore, she got up late the next day, but Chengxiao and Mao Jin were different. Mao Jin now not only has to take a lot of medicine every day, but also uses traditional Chinese medicine therapy to stimulate the meridian acupuncture points on time. And with the help of adults, special training is carried out. All of this was done to help her recover the ability of her nervous system as soon as possible, and not leave any sequelae yet.

It's morning, and it's surprisingly quiet. In the courtyard, only the tinkling sound of the stream flowing into Wanfeng Lake and the long chirp of crickets can be heard. The glow of the sun reflected the sky and the surface of the lake. But at this time, the sun is still hiding behind the overlapping peaks. The morning breeze blowing from the surface of the lake, with warm water vapor, is intoxicatingly fresh.

Mao Jin sat in a wheelchair, and as soon as he got out of the villa, he took a greedy breath. Her eyes were slightly closed, and the red glow reflected on her white jade-like face, which was indescribably charming. At this time, if Chengxiao stood in front of her with this piece of wood, she was afraid that she would inevitably jump a few times in her heart. It's a pity that he is now standing behind Mao Jin, and he can't see Mao Jin's bright and moving appearance at this time.

While many experts advocate that exercise should be done in the afternoon, adults have their own opinions. He has his own ideas and opinions, and he will not follow the crowd.

It is well known that the photosynthesis of plants produces oxygen, but the plant's own respiration also produces carbon dioxide. Photosynthesis uses carbon dioxide as a raw material to produce oxygen; Respiration, in turn, uses oxygen as a raw material, and oxidizes organic matter to produce carbon dioxide. When the plant does not produce enough carbon dioxide for photosynthesis, it absorbs carbon dioxide from the atmosphere. In the same way, the oxygen produced by the photosynthesis of plants is also preferentially supplied to its own respiration, and when the oxygen produced by photosynthesis is insufficient, it also has to be absorbed from the atmosphere. Therefore, it is often said that green plants produce oxygen, but this is not the case. However, in general, green plants produce more oxygen than they consume. If it weren't, the animal wouldn't be able to exist.

Many experts believe that exercise in the morning is not suitable because there is no light at night, and plants cannot produce oxygen, but the plants themselves will also respire and consume oxygen. After accumulating overnight, the carbon dioxide level reaches a maximum in the morning. Especially near large trees, the carbon dioxide content will be higher. In turn, green plants photosynthesize to produce oxygen during the day, and after a day of accumulation, by the afternoon, the oxygen content will also reach a maximum.

There is nothing wrong with this inference in itself, but these experts forget about a problem. Light is not the only variable that affects CO2 concentrations, so it's too early to say for sure!

During the day, the CO2 concentration in the afternoon may not be lower than in the morning! From the above extrapolation, the highest concentration of oxygen is in the afternoon. But our own human activities can completely disrupt this law!

The vast majority of animals, including humans themselves, are active during the day. At this time, the metabolic activity of the animal will inevitably intensify. The consumption of oxygen also increases, and the relative difference between oxygen and carbon dioxide concentrations decreases. In addition, in the daytime, I don't know how many diesel locomotives will be started. These guys are definitely more oxygen hungry than humans, and in this way, the relative difference between oxygen and carbon dioxide concentrations will be further reduced. And for now, human oxygen consumption has surpassed the combined oxygen production of all plants on Earth. Carbon dioxide gradually accumulates in the atmosphere, eventually triggering the greenhouse effect!

In this process, the plants do not necessarily fail to photosynthesize at night, not to mention that there is sometimes moonshine. In the city, there are all kinds of artificial light produced by humans. Although there are few green plants in the city, they still photosynthesize.

If we look at it from another macro perspective, the arguments put forward by those experts are even less convincing. Anyone who has studied geography knows that atmospheric flows are global. Oxygen produced in one place is most likely to be carried to other places by the flowing atmosphere. Such mutual flow will inevitably result in a stable ratio of the content of all gases. The amount of a gas can vary negligible throughout the day.

Therefore, it is obviously unscientific to judge high morning carbon dioxide concentrations based on photosynthesis alone. To really figure out which time of day CO2 concentrations are highest, it should not just be qualitative, but also quantitative.

In addition, although high concentrations of carbon dioxide are harmful to humans, it is difficult to exist in high concentrations of carbon dioxide wherever the atmosphere flows, and the concentration of carbon dioxide can only kill people when it is extremely high. For example, if you want to use

Carbon dioxide kills, then you have to put tens of thousands of sunflowers in a person's room, and the carbon dioxide produced by these sunflowers at night can poison people! Just think, is this possible? How many sunflowers can you put in an ordinary room?

On the other hand, some harmful dust produced by human activities. They are mostly suspended in the air during the day, and once inhaled, it is difficult for a person to exhale. They accumulate gradually in the respiratory tract and eventually lead to the corresponding disease. Carbon dioxide is not, he can inhale it, but he can also exhale it. Besides, even if the carbon dioxide concentration is really high in the morning, it will not hurt anyone. And those suspended particles, after a night of standstill, have basically precipitated, the air will naturally be much fresher, and the harm to people will be much less.

Therefore, even if the carbon dioxide concentration is high in the morning, Chengxiao is reluctant to inhale something that cannot be exhaled. When you think about it, it's obvious which is more important.