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Yawn

en.wikipedia.org/wiki/Yawn

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  ...

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 ...

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

www.huffingtonpost.com/2013/06/10/facts-yawning-why-we-yawn-contagious_n_3398301.html

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 ...

What makes us yawn? | HowStuffWorks

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

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  ...

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 I Yawn? - KidsHealth

kidshealth.org/kid/talk/qa/yawn.html

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

Yawning - excessive: MedlinePlus Medical Encyclopedia

www.nlm.nih.gov/medlineplus/ency/article/003096.htm

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 - Why What How of Human Body - Pediatric Oncall

www.pediatriconcall.com/kidscorner/whywhat/Why_yawn.aspx

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 ...

The Real Reason We Yawn - WSJ

www.wsj.com/articles/the-real-reason-we-yawn-1408403897

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 ... What to Do With Abandoned Suburban Offices? Clinton's U.N. Candidate? Opinion: Clinton's U.N. Candidate? Prevent Jet Lag While You Sleep?

Answer
Popular Q&A
Q: Why do people yawn?
A: it is a sensor based on needing oxygen, probably from a time when we lived in caves. Read More »
Source: answers.yahoo.com
Q: Why do people yawn?
A: Yes, your alveoli (air sacs in your lungs) tend to collapse once in a while due to air pressure differences, this reduces oxygen uptake, yawning is a reflex whi... Read More »
Source: answers.yahoo.com
Q: Why do people yawned
A: Low oxygen in the blood causes people to yawn which brings in more oxygen & carries out carbon dioxide Read More »
Source: www.kgbanswers.com
Q: Why do people yawn?
A: Nobody knows for sure why we yawn, but the physiological theory is that we yawn to expel excess carbon dioxide. ! Read More »
Source: www.chacha.com
Q: Why do i yawn?
A: A yawn is a respiratory reflex which regulates carbon dioxide & oxygen levels in blood. It's the body's way to intake large volumes of oxygen quickly. Read More »
Source: www.kgbanswers.co.uk