Everyone in the world yawn including animals also, According to attentive researchers, human beings tend to yawn about eight times per day. This Number probably change if you spend your time with other people who yawn or watching a yawning photo, video or you reading this Article. (^_^).
Why do we Yawn?
A 2007 study by psychology professor Andrew Gallup concluded that yawning likely serves to regulate the temperature of the body and the brain.
When we open our mouths to yawn, our jaws stretch down to their near-lowest position, heightening blood flow in the area that is then cooled by the quick intake of air. Gallup’s research showed that when participants in the study were warmed, the rate of yawning increased when exposed to images of the act. But when participants were in a cooler environment, or had placed cold ice packs on their foreheads, the rate of yawning was noticeably lower. At the end of a long tiring day of heated brain activity, yawning functions as a coolant to the literal sleepyhead.
Why Yawning is Contagious?
Not everyone catches a yawn. Around 60-70% of people yawn if they see another person yawn in real life or in a photo or even read about yawning.
The contagious nature of yawning is believed to stem from empathy, or an innate recognition that if someone else is in need of a brain cool-down, you might be too. There are also theories that yawning acts as an alerting mechanism, showing that an individual within a group is possibly in danger—or at least weary. A yawn may simply be the body’s way of alerting others that the current environment just isn’t suitable, for reasons of boredom.
If you yawn while reading this article comment below
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