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Yawn - Wikipedia

en.wikipedia.org/wiki/Yawn

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...

Why We Yawn - WebMD

www.webmd.com/brain/news/20110923/why-we-yawn

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 ...

Why Do I Yawn? - KidsHealth

kidshealth.org/en/kids/yawn.html

If you yawn in class, you'll probably notice a few other people will start yawning, too. Why is that?

Why do we yawn? Nothing to do with boredom - we're just cooling ...

www.independent.co.uk/news/science/why-do-we-yawn-nothing-to-do-with-boredom-were-just-cooling-our-brains-say-scientists-9356468.html

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 ...

Why Do We Yawn and Why Is It Contagious? | Science | Smithsonian

www.smithsonianmag.com/science-nature/why-do-we-yawn-and-why-is-it-contagious-3749674/

Jun 28, 2013 ... Cats and dogs do it. Even human babies do it inside the womb. And maybe after seeing the picture above, you're doing it now: yawning.

Why Do We Yawn, Hiccup and Get Goosebumps? - Health ...

health.clevelandclinic.org/2015/01/why-do-we-yawn-hiccup-and-get-goosebumps/

Jan 22, 2015 ... Learn the truth behind why we yawn, hiccup and get goosebumps. It's probably not what you think.

8 reasons for excessive yawning you probably didn't know about ...

www.thehealthsite.com/diseases-conditions/reasons-for-excessive-yawning-p915/

Sep 6, 2015 ... Fatigue or drowsiness: When you are tired or sleepy, it is common to yawn. While the exact mechanism of why we do this is yet unknown, ...

The Surprising Science of Yawning - The New Yorker

www.newyorker.com/science/maria-konnikova/the-surprising-science-of-yawning

Apr 14, 2014 ...You don't decide to yawn,” Robert Provine, a neuroscientist and the author of “ Curious ... Indeed, fatigue and boredom do reliably elicit yawns.

www.ask.com/youtube?q=Why Do You 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: ...

Why Are Yawns Contagious? | Mental Floss

mentalfloss.com/article/64654/why-are-yawns-contagious

Jun 11, 2015 ... What is yawning? And why do we do so much of it? ... If you yawn while reading about yawning, it's not because you're “picturing” a yawn.

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Facts About Yawning: Why We Do It, Why It's Contagious And More ...

www.huffingtonpost.com

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?)

Excessive Yawning and What You Can Do About It - Healthline

www.healthline.com

Feb 29, 2016 ... Excessive yawning is yawning that occurs frequently, sometimes without any apparent reason. Learn about possible causes and treatments for ...

What makes us yawn? | HowStuffWorks

science.howstuffworks.com

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  ...