Yawning is the involuntary act of simultaneous inhalation of some amount of air accompanied by stretching of the eardrums and followed by exhalation of breath.
We yawn when we're sleepy, tired, cold, or just brick bored! But the real reason for yawning is still a mystery, some theories indicate that we yawn to cool of our brain, some say that we yawn because of we need more oxygen in our body, and some say it is due to neurochemical changes in the brain.
Is yawning contagious?
Most of scientific journals, and articles tells that yawning is contagious in fact among the animals that yawns they say that only chimpanzees, dogs and humans are the species that were observed to have this behavior. Just seeing a picture of someone yawning, thinking of yawning, or even reading the word "yawning" (which i have already mentioned a lot) can already make you yawn. * Que your yawn here* So why does this phenomenon occur, some scientists say that you have the tendency to yawn whenever you see someone yawn is a sign of empathy, yawning promotes social bonding with other people as if you're saying :: "Yes i feel tired too" after a long day of work. They say it's just like contagious laughing and crying. So next time don't be shy to yawn in front of others, promote a social bond with others :))
How many times did you yawn while reading this?
