₦airaland Forum

Pals your criticism and thoughts are welcome, let's just have fun.

1). WHY IS YAWNING CONTAGIOUS? : Yawning is a puzzling phenomenon. Even the simple act
of talking about it is enough to make some people do it
(some of you are probably doing it right now). There
really is no other bodily function quite like it.
Now, some of you reading this may be aware of the
long-standing theory that the purpose of yawning is to
keep us alert by forcing our bodies to take in an extra
large gulp of oxygen. That makes sense, because we
mostly yawn when we’re tired or bored, situations where
an extra burst of energy would come in handy.
The thing is, experiments have conclusively disproven
that theory over the years. In fact, there is no universally
agreed upon theory for why we actually yawn, even
though everyone does it. A commonly accepted theory is
that yawning actually cools down the brain, because
various experiments have shown that one of the few
things to actually change in the body during a yawn is
the temperature of the brain itself.
As for why yawning is contagious, no one knows that
either.