There are different theories, but it is true yawning seems contagious and uncontrolled action a body does. If you yawn in class or anywhere you will surely notice a few other people start doing it too. Even thinking about yawning can make you yawn.
Ghulam Batool Shahani
Do you know why do we yawn? Let’s discuss yawning facts. Everybody yawns -let it be a new born baby, teenager, young, old or grandparents; even the animals do. But most people do not know why we do it?
There are many reasons and theories about it. The people do not yawn only when they feel drowsy but at times people do it out of tiredness or may be because of getting dry as dust. Science suggests that when one feels so, it’s done owing to the dearth of oxygen. It’s because when our breathing becomes slow then yawning helps us inhale more oxygen into the body and exhale more carbon dioxide from blood. Perhaps for this reason there is an interesting quote that ‘yawning is your body’s way of saying that only 20 percent battery remains.’
Another leading reason and accepted theory is that yawning stretches lungs and its tissues. Hence, yawning may be a way to flex muscles and joints so as to increase heart rate. If we do not yawn then taking a deep breath would become harder and harder and that would not be good for health condition.
The scientifically backed and approved theory about why do we yawn is brain temperature regulation. A 2014 study published in journal physiology behavior looked at the yawning habits of 120 people and found that it occurred less during winter. If the brain temperature gets too far outside of the norm, inhaling air can help cool it down.
There is one idea that everyone knows is true that yawning seems contagious and uncontrolled action a body does. If you yawn in class or anywhere you will surely notice a few other people start doing it too. Even thinking about yawning can make you yawn. I am sure you must be yawning at the time of reading this piece of writing. It is matter of fact that you can’t escape yawning once you think of it.