Reasons for frequent yawning

We have all yawned in our daily lives. In everyone’s impression, yawning only occurs when we feel sleepy and want to sleep. Therefore, many people do not pay attention when they yawn frequently. In fact, sometimes yawning is not necessarily caused by sleepiness, it may be caused by other reasons. Therefore, you must pay attention when you yawn frequently.

Brain hypoxia

Some people believe that yawning is a sign of brain hypoxia. Through the deep breathing exercise of yawning, the human body increases oxygen in the blood and expel more carbon dioxide, making people more energetic. When people are about to start intense work, they often yawn. This may be because the human body uses deep breathing to add more oxygen to the blood and improve the brain's activity. During the intense learning process, the human nervous system consumes more energy and produces a large amount of carbon dioxide. Calm breathing cannot expel carbon dioxide from the body in time. Excessive carbon dioxide accumulates in the body, which will cause chest tightness and fatigue in various organs of the body. Because the carbon dioxide in the blood is higher than normal, it will stimulate the respiratory center and cause people to take deep breaths, which is yawning.

Fatigue and lack of sleep

When people are sleepy, they often yawn continuously to remind the body that the brain is tired and needs sleep and rest, so yawning is also a method of hypnosis. When the human body is sleep deprived or overworked, it will yawn continuously. This is a warning that the brain and organs are tired and we should go to bed quickly and get rest. We often yawn after getting up in the morning, which can promote the transformation of various functional areas of the cerebral cortex from an inhibitory state to an excited state, so that the cerebral cortex can work normally.

Environmental cooling

Yawning is most closely related to ambient temperature. Yawning is most likely to occur when the temperature is around 20℃. If the outside environment is too cold, the brain does not need to resort to yawning to cool down. If the temperature is too high (such as around 37°C), yawning will not have much effect in cooling down, and the body will naturally reduce yawning.

Vascular Health

Abnormal yawning is related to vascular health. For example, patients with high blood pressure may yawn a lot. High blood pressure, vascular lesions, and reduced blood flow to the brain are all prone to yawning. Patients with hypertension or arteriosclerosis often yawn to improve blood supply to brain cells because the elasticity of their blood vessel walls is reduced and the blood flow to the brain is reduced. Therefore, frequent yawning may be a sign of poor blood supply to the brain, and you should seek medical attention as soon as possible.