Why do people yawn when they feel tired?

When a person is tired and tired, inhibition predominates in the brain, and respiratory function is suppressed. Yawning is formed unintentionally, yawning is usually slow breathing, in fact, people not only yawn when they are tired, people will also yawn when they just wake up, yawning is more common in life, if a person does not yawn, then this person is not normal. <>

Yawning is unintentional, because when people are tired, the inhibition in the brain is dominant, and the respiratory function is suppressed, yawning can improve the blood supply to brain cells through the movement of facial muscles, so hiata is not just because you are just tired to yawn, he is because when people are tired, the respiratory function is suppressed, yawning can improve the blood supply to cells through the facial muscles, in fact, in addition to people, animals will also yawn, and people will yawn unintentionally when they are nervous, Sometimes when you yawn when you're nervous, some people will find themselves yawning, and some people won't find themselves yawning. <>

Because when you are nervous, your body and brain will be nervous, so you yawn unintentionally, and your brain is in a state of tension, so you don't pay much attention to your own yawning, the most common thing about yawning is to stay up late for a long time, in fact, staying up late for a long time, the harm to the body is very great, especially that kind of black and white shift, if you transfer a shift a week or a month, it is not a big problem, but if you transfer a shift every two days, then the body may have problems, not just yawn, If it is a female friend, there will be endocrine disorders, which will cause the aunt to be abnormal, this is just to say that if you stay up too late, there will be problems, so if you can, try not to stay up late. <>

Yawning is only because when people are tired, the respiratory function will be suppressed, and the inhibition in the brain is dominant, so it will yawn unintentionally, and the breathing will improve the blood supply to brain cells through the facial muscles, so in life, we will yawn once we are tired.

Yawning when tired is mainly a signal transmitted to us by the brain, the main reason for this signal is to remind us that we should rest, if we do not rest, it is likely to form a negative state of the body, so when we yawn, we should try to find time to let ourselves rest, so that our body can quickly recover energy.

Of course, if conditions permit, we can find a place to take a nap, which can help us get back to a full state more quickly.

First of all, the first point, when you are very tired, then the nervous system is also very tired and tired, at this time it will send a signal to yawn, the second point is that you will yawn when you are very tired, and another reason is that you are overtired, and the nerves cannot support you to continue to work, you should sleep.

Yawning is a response signal of nervous fatigue, indicating that excitement is about to reach or has reached a threshold, and should be turned to inhibition and rest, otherwise the mind will be in a trance, and the work will be half the effort

Because when people are tired, it will cause a lack of oxygen to the brain. Therefore, the human body will give relevant early warning responses, and yawning will occur.

When you are tired, your brain will be deprived of blood and oxygen, and your brain will be very tired, and yawning means that your brain blood supply is insufficient.

He is suggesting that we can sleep and not stay up late often, because the human brain is in a state of fatigue, and the respiratory function will be inhibited, and the signal can only be released by yawning.

Because when people are tired, the inhibitory effect of the brain will take advantage, and the amount of carbon dioxide in the blood will increase.

Before explaining this question, it is necessary to first explain the role of respiration and the regulation of respiration from a physiological point of view. The essence of the breathing motion is the exchange of gases, the expulsion of carbon dioxide, and the inhalation of oxygen. This is something that we do all the time every day, in fact, it is also under the strict regulation of the respiratory center.

The chemoreceptors of the respiratory center are located in the medulla oblongata, which perceive changes in the concentration of H+ in the cerebrospinal fluid. To maintain a normal respiratory rhythm, the concentration of H+ in the cerebrospinal fluid needs to be maintained within a certain range. When the concentration of H+ in the cerebrospinal fluid increases, the chemoreceptors in the respiratory center detect the change and send a corresponding signal to the body to intensify the breathing exercise.

When we are sleepy and tired, our breathing is usually shallow, so that the carbon dioxide in the body cannot be fully excreted from the body during breathing, and thus accumulates in the blood, resulting in an increase in the concentration of carbon dioxide in the blood.

Carbon dioxide in the blood crosses the blood-brain barrier and reaches the cerebrospinal fluid, causing the H+ content of the cerebrospinal fluid to rise. At this point, the respiratory center chemoreceptors located in the medulla oblongata are aware of the potential danger and send signals to prepare to deepen and accelerate breathing.

Yawning is a response from our body. Breathing is actually taking a deep breath. That is, when you yawn, you inhale more oxygen and expel more carbon dioxide. This restores normal levels of carbon dioxide in the blood and H+ in the cerebrospinal fluid.

Therefore, from a physiological point of view, yawning is a reflex activity, the essence of which is a deep breath, in order to maintain the stability of our body's internal environment, to protect the basic functions of our body, and therefore to avoid more serious consequences.

From the perspective of traditional Chinese medicine, it is stretching the gallbladder meridian. In addition to the gallbladder meridians, yawning also stretches the kidney meridians. The gallbladder is warm yang, the kidney stores essence, one is the rising yang, and the other is the essence.

Why yawn? Stretching these two meridians is the same as the principle of crossing the tower and killing it, that is, it is overdrawn with the body.

This is because when people are very tired, there will be some carbon dioxide in the body, and when there is too much carbon dioxide in the body, oxygen is needed to achieve balance, so there will be yawning.

It is because the person is sleepy, and the nerves of the whole body are relaxing, the muscles are promoted, and the psychological rest is also good, so the yawn.

Yawning is done to cool down the brain, which in turn keeps it healthy and awake. By yawning, the blood oxygen concentration can be adjusted and the amount of oxygen in the blood can be increased.

This is the instinctive reaction of the human body, and it is also the influence of some organs in the body, so people will yawn when they feel particularly sleepy.

Yawning because you are particularly sleepy or tired, which is a symbol of your tiredness. Be sure to go to bed when you yawn.

Because when people are tired, they want to rest for various skills, so they should yawn and let their bodies rest.

Yawning is a beneficial physiological response of the body

Yawning is a beneficial physiological response of the body, and it is a protective physiological reflex formed by human beings in natural life. The movements of breathing and yawning are controlled by different brain regions; When the concentration of nuclear oxygen in the paracompartment, located in the hypothalamus, is low, it causes people to yawn. Common causes of yawning are excessive fatigue, nervousness, sedentary lifestyle, concentration at work or reading, overheating of the room, poor ventilation, etc.

Therefore, yawning is a response signal of nervous fatigue, indicating that excitement is about to reach or has reached a threshold, and should be turned to inhibition and rest, otherwise the mind will be in a trance, and in the long run, you may even get neurasthenia, which will seriously affect your health. When you yawn, your lungs are able to inhale more air than usual because your mouth is wide, your chest expands, and your shoulders are raised. When you exhale, a large amount of carbon dioxide is also expelled.

Therefore, yawning can help balance the pressure in the middle ear in addition to reserving the oxygen needed, relieving fatigue and relaxing muscles. If you want to yawn constantly, you are tired and you should move or rest appropriately.

Therefore, it can be considered that yawning gives people the best rest physiologically and psychologically, and has an important physiological protective effect on the human body. Some people believe that yawning is a manifestation of cerebral hypoxia, and the human body increases oxygen in the blood through the deep breathing exercise of yawning, excreting more carbon dioxide, so that the person is more energetic. When people are sleepy, they often yawn constantly to remind the human body that the brain is tired and needs to sleep, so yawning is also a hypnotic method.

In short, yawning is an instinctive reaction of the human body, which is like heartbeat and breathing, and is not controlled by the human will. It has a good protective effect on protecting brain cells, increasing the oxygen supply to brain cells, and improving the body's ability to cope with stress.