A yawn is a reflex consisting of the simultaneous inhalation of air and the
stretching of the ..... George Washington said, "If You Cough, Sneeze, Sigh, or
Yawn, do it not Loud but Privately; a...
Sep 23, 2011 ... 23, 2011-- Why do we yawn? ... So do most vertebrate animals. ... When you start
to yawn, powerful stretching of the jaw increases blood flow in ...
If you yawn in class, you'll probably notice a few other people will start yawning,
too. Why is that?
Jun 10, 2013 ... We all do it, and we all know it has at least something to do with how tired we feel
. ... about yawning can trigger one (did we get you yet?).
Feb 29, 2016 ... Yawning is a mostly involuntary process of opening the mouth and breathing in
deeply, filling the lungs with air. It is a very natural response to ...
Don't misunderstand, we aren't intending to bore you, but just reading about
yawning will make you do it, just as seeing or hearing someone else yawn makes
May 12, 2014 ... A new study has suggested that the reason we yawn has nothing to do ... thanks
to the yawning and your newly-cooled brain, you're probably ...
Aug 19, 2014 ... Most people yawn upon seeing someone else do it, but infants and people with
autism or schizophrenia aren't so affected by this contagion ...
Excessive yawning that happens more often than expected, even if drowsiness or
weariness is present is ... How many times do you yawn per hour or day?
WHY DO WE YAWN? For that you'll first have to understand what happens when
we breathe. Normally, when you breathe in, you inhale oxygen and your body ...