There are many theories about why people yawn, but no one knows for sure.
This "contagious" yawning has also been observed in chimpanzees, dogs, and
can ..... George Washington said, "If You Cough, Sneeze, Sigh, or Yawn, do it not
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 ...
Jun 10, 2013 ... Not just anyone will pass a yawn onto you. According to 2012 research, yawns
are most contagious among the closest of pals. "Researchers ...
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 ...
If you yawn in class, you'll probably notice a few other people will start yawning,
too. Why is that?
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 ...
Aug 19, 2014 ... Scientists working to unravel the mystery surrounding the yawn, and why it's
contagious, have discovered that yawning is much more complicated than ...
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