Holy Cow! Can someone tell us how not to yawn? We are asking because the very moment we thought of writing on yawning, we started yawning and we are in a frenzy that seems not willing to stop for the time being. So, what is this yawning and why does the very mention of the word makes us yawn? What do scientists have to say about this weird phenomenon? Let us try to figure out the answers to these questions through our list of 30 interesting yawning facts but we don’t want to make any promises because… well you will come to know!
Interesting Yawning Facts: 1-10
1. The medical term for yawning is oscitation. It involves simultaneous stretching of eardrums and air inhalation which is then immediately followed by exhalation.
2. Most of the vertebrates in this world yawn and that includes humans, dogs, chimpanzees and others.
3. Yawning is extremely contagious. Even hearing the word ‘yawn’ can trigger yawing. Even looking at or hearing someone yawing can make us yawn.
4. So, what makes us yawn? This is one everyday mystery that scientists have failed to solve conclusively.
5. There are more than 20 different theories that explain why we yawn but not all experts unanimously agree to one single theory.
6. One of the most popular theories out there in market is that when the level of oxygen in the body depletes, we yawn to get the necessary influx of oxygen.
7. Studies however reveal something different. As a matter of fact, yawning actually reduces oxygen intake as compared to usual respiration.
8. Another bit of study found that yawing never decreases whether in level of oxygen is increased or reduced in inhaled air. So no wonder, reduced levels of oxygen in blood leads to yawing is not really a theory that everyone agrees to.
9. Another theory says that yawing helps to stretch the throat and tongue, which are important muscles responsible for helping us to swallow, breathe and talk and yawing just helps to stretch and refresh them and helps in lymph circulation.
10. Some say that yawns are caused by chemicals in brain. These chemicals are the same ones that control our appetite, our mood, our emotions and several other things. Proponents of this theory say that the chemicals that are responsible are nitric oxide, glutamic acid, dopamine and serotonin.