There are many theories about why people yawn, but no one knows for sure.
A yawn is a reflex consisting of the simultaneous inhalation of air and the
stretching of the .... "We believe that contagious yawning indicates empathy. ... A
2007 study found that young child...
Jun 28, 2013 ... Pinpointing exactly why we yawn is a tough task, but the latest research suggests
that our sleepy sighs help to regulate the temperature of our ...
Sep 23, 2011 ... All humans yawn. So do most vertebrate animals. Surely it serves some useful
function. But what that might be has puzzled scientists ...
Jun 10, 2013 ... We all do it, and we all know it has at least something to do with how tired we feel
. But unlike sleep apnea or laptops in the bedroom, yawning is ...
www.ask.com/youtube?q=Why Do We Yawn?&v=I0dQx4SNSwE
Mar 12, 2014 ... What makes yawning so contagious? Watch the 'Yawn-O-Meter': http://bit.ly/
1qwFDrx SUBSCRIBE: http://bit.ly/10kWnZ7 Instagram and Twitter: ...
But why, exactly, do people and animals yawn? ... Yawning, then, would be an
involuntary reflex (something we can't really control) to help us control our
May 12, 2014 ... A new study has suggested that the reason we yawn has nothing to do with
tiredness or boredom, but actually works in order to cool down our ...
Jan 22, 2015 ... Throughout the ages, people have wondered and invented explanations – some
reasonable and some quite far-fetched – as to why we yawn, ...
Aug 19, 2014 ... Yawning tends to occur more in summer. Most people yawn upon seeing
someone else do it, but infants and people with autism or ...