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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 eardrums, followed by an exhalation of breath. Yawning ( oscitation) ...

What makes us yawn? | HowStuffWorks

science.howstuffworks.com/life/inside-the-mind/human-brain/question572.htm

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. There's ...

Yawn | Define Yawn at Dictionary.com

www.dictionary.com/browse/yawn

Yawn definition, to open the mouth somewhat involuntarily with a prolonged, deep inhalation and sighing or heavy exhalation, as from drowsiness or boredom .

Why We Yawn - WebMD

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

Sep 23, 2011 ... People yawn more easily in cooler temperatures, supporting the idea that yawning cools the brain.

Why Do I Yawn? - KidsHealth

kidshealth.org/en/kids/yawn.html

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 for ...

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 ... 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 ...

The Surprising Science of Yawning - The New Yorker

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

Apr 14, 2014 ... Yawning may be the opposite of what we think—not a signal of sleepiness but a signal that it's time to act.

www.ask.com/youtube?q=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: ...

Yawn - definition of yawn by The Free Dictionary

www.thefreedictionary.com/yawn

To open the mouth wide with a deep inhalation, usually involuntarily from drowsiness, fatigue, or boredom. 2. To open wide; gape: The chasm yawned at our feet ...