Why do you yawn when you are sleepy? Not sleepy, why do you always yawn?

Because the body excretes carbon dioxide and reduces drowsiness. Generally, when you are sleepy, the carbon dioxide content in the body is high, and the brain sends out instructions to yawn, which can expel a large amount of carbon dioxide and inhale oxygen, reducing the feeling of drowsiness.

The main reason for this is because people will have some conditioned reflexes when they are sleepy, so they will yawn, which is just a natural conditioned reflex of the human body.

Why do people yawn?

It is related to excessive fatigue and fatigue. Some brain cells are not rested, and the symptoms of snorting will appear.

The carbon dioxide in the blood increases, and the time of a breath is about 6 seconds, during which people close their eyes and ears, the nerves and muscles of the whole body are completely relaxed, and the human body increases oxygen in the blood through the deep breathing movement of the breath, and discharges more carbon dioxide, so as to get energetic.

Why do people yawn? Star Awareness Project

Yawning is mainly caused by the lack of oxygen in the brain, which is generally related to poor rest, poor air circulation in the sleeping environment, or excessive mental work. Advice: Get plenty of rest, don't stay up late, and get enough sleep.

Precautions: Pay attention to indoor ventilation and exercise more moderately, which is conducive to improving symptoms.

People yawn from the moment they are born until the end of their lives. Why people yawn may not be clear why. Possible mechanism A yawn lasts about 6 seconds, during which the person closes his eyes and listens, and the nerves and muscles of the whole body are completely relaxed.

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.

Yawning may be caused by excessive exercise, nervousness, staying up late, poor environmental ventilation, obstructive sleep apnea syndrome, cerebrovascular diseases, etc.

Yawning is a reaction to the body's lack of oxygen. The body's hypoxic function decreases, so it becomes sleepy. In this case, if it is a suitable occasion (e.g., not on the podium, not in a formal conversation with someone, etc.), you should relax and yawn fully.

In this way, the oxygen in the body can be replenished in time, the body functions can be regulated, and the spirit can be restored.

Frequent yawning is a manifestation of a lack of oxygen to the brain, and there are two conditions of brain hypoxia, one is transient and the other is persistent. What are the effects of these two situations, let's briefly discern them.

Lack of oxygen to the brain for 8-15 seconds will lead to loss of consciousness, hypoxia for more than 6-10 minutes will lead to coma, and in severe cases, brain death. The brain's need for oxygen is very high.

Aerobic exercise: Aerobic exercise is simply regular, continuous, and oxygen inhalation during exercise can meet the needs of exercise, such as running and swimming.

Anaerobic exercise: explosive strenuous exercise. Oxygen could not meet the needs of the exercise at the time, such as weightlifting. Sudden explosive movements.

First of all, it is explained that 24 hours of continuous inhalation of pure oxygen, and the concentration reaches 60%, which will cause oxygen poisoning. Symptoms of oxygen poisoning include coughing, tremors in the muscles at the corners of the mouth, and deformed eyes when looking at things, such as a square stool that looks round. Excessive oxygen intake will produce too many oxygen free radicals, which will accelerate the oxidative aging of organs.

Normal oxygen contains 2%-3% of which has anti-inflammatory, endocrine regulating effects, and too much of it will lead to oxidation and aging.

Hypoxia is divided into transient hypoxia and persistent hypoxia. Yawning is a transient hypoxia. The onset of myocardial infarction causes the blood vessels to become blocked, causing a lack of oxygen to the brain, which is a persistent hypoxia.

The oxygen needs of various organs of the body from high to low are: brain, heart, lungs, liver, kidneys, gastrointestinal tract, muscles, **. The mildest manifestation of gas poisoning is chills all over the body, palpitation, general weakness, and finally convulsions and coma, and the body functions automatically supply oxygen to the brain that needs oxygen the most, so the organs with the least oxygen demand are the first to respond to gas poisoning.

The only difference between the two places is that the content of negative oxygen ions in oxygen is different, negative oxygen ions exist near green plants, negative oxygen ions are like vitamins in the air, and have anti-aging and antioxidant effects.

Yawning is related to the concentration of oxygen in the blood of the person. When a person is sleepy, it is actually in a resting state for a long time, the blood circulation is slower, the oxygen in the blood is consumed, but it is not replenished in time, the concentration of oxygen in the blood is low, and the brain shows a mild lack of oxygen. As blood flows through the brainstem, nerve cells in the brainstem that sense the concentration of oxygen in the blood sense it and give nerve instructions to speed up breathing to provide more oxygen.

Yawning is actually a deep breathing process, and people inhale more oxygen for a while, and they also get a little comfort in an instant. When people sit for a long time, exercise less, blood flow is slow, and breathing is slow, which is easy to cause less oxygen in the blood, and it is easy to yawn, which is the reason. Tears are caused when yawning because when people yawn, their mouths are wide open and they exhale as much breath out of their bodies as possible in order to exhale carbon dioxide and inhale oxygen.

With the action of yawning, a stream of gas exhales forcefully from the mouth. The muscles of the cheeks, tongue and throat tense and contract, and the pressure in the mouth and nose increases. As a result of the increased pressure in the nasal cavity, it will temporarily block the work of the nasolacrimal duct to excrete tears, and the tears will not flow, and more and more tears will accumulate in the eyes.

There will be tears in his eyes, and finally he will burst out of his eyes and flow to his face.

One aspect is due to lack of sleep, and it can also be caused by neurasthenia.

It may be that the quality of sleep is not good and needs to be adjusted:

1. Eat smaller, more frequent meals.

It's best to eat something every 3 hours.

But don't eat too much at once.

2. Turn off your phone.

Typing or texting can make people overexcited, which can easily lead to insomnia, and it is best to drink a cup of sleep fragrance before going to bed, which can help you fall asleep quickly.

3. Clean up your brain.

Put a pen and paper next to your bed and write down your anxieties so that you don't worry so much and you can sleep peacefully.

4. Listen to hypnotic music.

You will gradually integrate into the situation and help you fall asleep as soon as possible.

Fifth, there is a regular life.

Developing a regular sleep schedule can help regulate your sleep cycle. Don't stay in bed for long periods of time.

Often sleepy yawning and copying is not good sleep quality at night, you can try these sleep aid methods: 1. Eat less and eat more often

It is best to eat DAO every 3 hours

Something, but don't eat too much at once.

2. Turn off your phone.

Typing or texting can be overly exciting, which can easily lead to insomnia.

Third, start from the roots.

If you want to help you sleep, the best way is to take the sleep incense orally before going to bed, and stick to it for a period of time, which can help reduce anxiety, soothe nerves, help you fall asleep quickly, and improve sleep quality.

Fifth, there is a regular life.

Developing a regular sleep schedule can help regulate your sleep cycle. Don't stay in bed for long periods of time.

6. Turn down the temperature of the bath water.

A hot bath before bed will temporarily increase the body temperature and then drop naturally, which may affect sleep.