Why do we Yawn? Is it contagious?
This is another interesting question, I thought I should answer in the why’s series where I answer some really interesting questions that some people can never think of as they are so obvious.
This is one of the things almost every human being and animal do.
Everyone yawns- even unborn babies in the womb- and yet researchers aren’t quite sure why we do it. I was really fascinated by the curiosity of the question and sometimes I feel how dumb I am Because I don’t even know what is happening in my body.
Although humans yawn more often when we are tired or bored, scientists have ruled out sleepiness or lack of oxygen(which would cause sleepiness) as causes. Instead, they suspect yawning might help us keep a cool head.
Is it harmful?
As with a supercomputer, the brain needs to stay cool to function properly. Each yawn pumps air into sinus cavities in the head, cooling the brain in the process. So, it is safe to say yawning is not harmful but beneficial for everyone.
And because brain and body are slightly warmer just before bed, we tend to yawn when we are tired.
Is Yawning contagious?
Absolutely! In fact, Yawning is so contagious that even reading about yawning can make you yawn.
I am yawned 5 or 6 times while writing this article. Go ahead and get it out of your system.
Studies have shown again and again that people who see each other yawn- even in videos- are more likely to yawn.
Why is yawning contagious?
Researchers tends to believe that yawning is a way human being reinforce social bonds between people. We tends to understand and feel the emotions of friends and even strangers. Yawning falls into that category. When we see someone yawn we yawn.
Is yawning contagious for other animals beside human being?
You bet it is. At least among higher primates such as chimpanzees and bonobos. Even more surprisingly dogs catch yawns from watching people.