Why do we yawn when we are not tired

What causes excessive yawning?

why do we yawn when we are not tired

Do brains, like computers, operate best when they're cool? Some evidence suggests that yawning may help regulate brain temperature and.

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Yawning is a mostly involuntary process of opening the mouth and breathing in deeply, filling the lungs with air. It is a very natural response to being tired. In fact, yawning is usually triggered by sleepiness or fatigue. Some yawns are short, Read More. Some yawns are short, and some last for several seconds before an open-mouthed exhale. Watery eyes, stretching, or audible sighs may accompany yawning.

Although not fully understood, yawning appears to be not only a sign of tiredness but also a much more general sign of changing conditions within the body. Studies have shown that we yawn when we are fatigued, as well as when we are awakening, and during other times when the state of alertness is changing. You are correct in thinking that yawns are catching. Seeing, hearing or thinking about yawning can trigger the event, but there is little understanding of why it is contagious. A number of theories regarding the genesis of yawning have been presented over the years. Some evidence suggests that yawning is a means of communicating changing environmental or internal body conditions to others. If so, then its contagious nature is most likely a means of communication within groups of animals, possibly as a means to synchronize behavior.

We all do it, and we all know it has at least something to do with how tired we feel. But unlike sleep apnea or laptops in the bedroom , yawning is an aspect of sleep that researchers haven't quite figured out just yet. That doesn't mean we're totally in the dark when it comes to catching flies. Here are a few of the facts we know for sure when it comes to yawning. FIrst off, we don't only do it when we're tired. It also probably doesn't reflect a lack of oxygen , although that theory isn't a totally nutty one. The idea likely blossomed from the fact that too-shallow breathing can cause problems, says Michael Decker, Ph.

Everybody yawns ó from unborn babies to the oldest great-grandparent. Animals do it, too. But why, exactly, do people and animals yawn? No one knows for sure. But there are many theories ideas about why people yawn. As this theory goes, our bodies take in less oxygen because our breathing has slowed. Yawning, then, would be an involuntary reflex something we can't really control to help us control our oxygen and carbon dioxide levels.

Last week, while my daughter was in the middle of telling me a very important story, I did something very rude. I just couldn't help it. I opened my mouth and inhaled a giant involuntary yawn. Was I bored with her story? Heck, no. But it definitely created an awkward moment. The best I could do was explain what a yawn really meant.

A classic symptom of fatigue, yawning can sometimes be a sign that your body is ready for sleep. But a yawn is not necessarily a sign that you are tiredócheck out these other potential causes. The act of yawning is contagious. If you see someone yawn or read about yawning, you might do it yourself. This involuntary imitation may be related to the evolutionary history of yawning.



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Why Do We Yawn?

Why do we yawn when we are tired? And why does it seem to be contagious?

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