|
Wow this topics going all over the place, if we are talking about actual yawning in humans, I believe the main purpose is due too low oxygen counts. But there also would have too be some sort of physiological trigger as well hence the yawning when you see or even hear somebody else yawn. In the case of being tired or bored I don’t know the reason In order too completely understand you would have too find out exactly what happens in the human body at these times, I would assume the being bored is the same reason as getting tired. and my guess and this is just a GUESS is that when you become tired something occurs in your body i.e. change of heart rate/ constriction of blood vessels something of the sort that prepares the body for the act of sleeping, and if I were too guess I would say that while the body is going through this change the brain momentarily reads low O2 hence the yawn too balance it back out before actually sleeping.
Now I pulled that right out of my a** its completely what I would call a well thought out guess. But like I said I haven’t actually tried too study yawning .
Devon
|
Threaded Mode