Why we yawn?

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Why we yawn?


I have always been fascinated by yawning and what purpose it has to our bodily function, if any. Do we yawn out of boredom? Tiredness? Or some other reason? Yawning as a phenomenon has many people searching for the reasons of why we actually do it. In fact, the powerful contagious nature of yawning has puzzled researchers for decades.



A yawn is an involuntary reflex where the mouth is opened wide, and the lungs take in a lot of air. The air is then exhaled slowly. During this time, the eardrums stretch, and the eyes may also close tight, causing them to water.
No thought or action has to be taken to produce a yawn, and the process is similar for everyone. Yawning commonly occurs either before or after sleep, which is why it is usually considered a sign of being tired. Yawning also occurs frequently in people who are doing boring or tedious things.
There is also a social aspect to yawning. Yawning appears to be contagious among humans and other animals, and the contagiousness of a yawn is well documented but hardly understood.

Causes of yawning 


Before bed:

At night, we become less alert, and that can encourage a yawn. Even though there’s a lot of mystery surrounding this bodily function, we do know that certain chemicals in our brain can induce a yawn. One of these chemicals, adrenocorticotropic hormone, spikes at night, and that’s one potential reason that we do it right before bed.




When bored

While a yawn doesn’t  necessarily means you're bored, it doesn’t rule it out, either. We know that when our brain isn’t properly stimulated, its temperature drops and that can encourage yawning.




When tired

The act of yawning increases your heart rate, so one theory is that if you’re tired, this short activity can give you a quick burst of energy. If you find yourself doing it at inopportune times during the day, your body may be trying to wake you up.





How to prevent yawning


  • Deep breathing 
  • Chill out
  • Go outside
  • Stretching 
  • Drink water 

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