Why do people yawn when they are tired and tired?

When a person is in a state of drowsiness and fatigue, the inhibition effect in the brain is dominant, and the respiratory function is inhibited, which can make the breathing become deeper, the interval becomes longer, and the carbon dioxide and other products in the blood accumulate as a result. These substances act on the respiratory center of the brain, causing an unintentional breathing action, known as yawning. During yawning, the person inhales deeply, slowly enough to replenish the oxygen in the blood.

In addition, the tense activity of the mouth, face, and neck muscles can increase the blood flow to the blood vessels in the head. All of this improves the blood supply to brain cells.

Because yawning will close your eyes, it will make you feel very comfortable, and you can take away your sleepiness.

Introduction: In daily life, people always show their spirit through different movements and behavioral states, and when people feel tired, they will yawn, why is this?

Yawning is an involuntary behavior, which means that when a person feels tired, the body will naturally yawn, and it is not a conscious action. Some people think that the process of yawning is actually helping the body to inhale more oxygen, and when yawning, their mouth is very wide open, and the expression is very relaxed. In this way, you can increase the amount of air you inhale, so that your brain is more awake, and improve the state of the brain that is relatively deprived of oxygen, so that you are not so tired.

Moreover, the phenomenon of yawning is a group phenomenon, that is, when there is a person around you who yawns, others may also subconsciously imitate it, so that yawning will also occur. Of course, there are also people who think that he found out that because the ancestors of human beings had similar behaviors before, this unconscious behavior will also be retained in the process of evolution, so there is a situation of yawning. However, when the body yawns, it means that you are not sleeping enough and are very tired, which is also a signal from the body.

Although some people say that the total amount of sleep is not long, the quality of sleep is very high, and they will be energetic every day. There are many successful people who have also said how they fall asleep every day, but it is undeniable that these people sleep very regularly. And for everyone, sleeping at the normal time of falling asleep can improve their sleep quality, if you want to improve your sleep quality, you should also pay attention to emptying your brain, don't think about things before going to sleep, you can close your eyes and refresh your sleep quality will be higher.

And when sleeping, you must ensure that your environment is fresh and clean, at this time the quality of sleep will be higher, and you will feel refreshed after waking up in the morning.

Because when we feel tired, this meaning is passed on to the brain, and the brain functions, the brain starves of oxygen, and then it yawns.

The act of yawning is an involuntary behavior, which occurs when the person is tired, and it is not a conscious behavior.

In this way, fatigue can be relieved, which is good for the cells in the body and can make the cells more active.

This is because if people feel tired, then blood sugar will be relatively low, and there will be a certain lack of oxygen in the brain tissue, and they will yawn.

It should be an involuntary behavior, which can effectively relax our tense nerves and not be in a state of excessive hypoxia.

Because it is a natural reaction of the human body, and yawning can make the body a little more comfortable.

It can relieve tiredness, and it will also make a person feel very comfortable, and can improve their blood oxygen saturation, can improve concentration, can improve efficiency, make their reactions become particularly sensitive, will become very agile, and their thinking will be very active. Judgment will also continue to improve.

It can promote deep breathing, and then you can also breathe more fresh air, which can improve the saturation of blood oxygen, which can make the mind more active, improve work efficiency, and get a good rest and relaxation.

Yawning can refresh the mind, promote facial muscle activity, cool the brain, relax the mind, and feel happy both physically and mentally.