A yawn is a reflex consisting of the simultaneous inhalation of air and the
stretching of the eardrums, followed by an exhalation of breath. Yawning (
Next time you're in a meeting, try this little experiment: Take a big yawn, cover
your mouth out of courtesy and watch to see how many people follow suit.
Aug 19, 2014 ... Scientists working to unravel the mystery surrounding the yawn, and why it's
contagious, have discovered that yawning is much more ...
Yawn definition, to open the mouth somewhat involuntarily with a prolonged,
deep inhalation and sighing or heavy exhalation, as from drowsiness or boredom
Mar 12, 2014 ... What makes yawning so contagious? Watch the 'Yawn-O-Meter': http://bit.ly/
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The study of yawning is anything but boring. It boasts a rich history of theories
that go back to Antiquity, but thus far the biological function of yawning remains a
Everybody yawns — from unborn babies to the oldest great-grandparent.
Animals do it, too. But why, exactly, do people and animals yawn? No one knows
Aug 12, 2014 ... Yawning has puzzled scientists for more than two millennia. But could a new
theory settle the question once and for all? David Robson ...
YAWN is a nootropic blend with components optimized for each of the three
phases of sleep: falling asleep, improving quality of sleep, and feeling refreshed
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