Why Is Yawning Important?

One is that when we are bored or tired, we just don't breathe as deeply as we usually do. As this theory goes, our bodies take in less oxygen because our breathing has slowed. Therefore, yawning helps us bring more oxygen into the blood and move more carbon dioxide out of the blood.

Is yawning good or bad?

The short answer is that yawning is normal. It is common and usually is totally benign. However, if there is an increase in yawning that cannot be explained by lack of sleep or some of the other causes mentioned above, then yawning can be a symptom of some disease.

Is yawning due to a lack of oxygen?

In addition, different regions of the brain control yawning and breathing. Still, low oxygen levels in the paraventricular nucleus (PVN) of the hypothalamus of the brain can induce yawning. Another hypothesis is that we yawn because we are tired or bored.