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 ... Approximately 20 physiological reasons for yawning have
been proposed by scholars, but there is litt...
Sep 23, 2011 ... People yawn more easily in cooler temperatures, supporting the idea ... Now a
series of experiments suggests a surprising reason for yawning.
Aug 19, 2014 ... Our tendency to yawn when other people yawn has long been incorrectly
explained as primarily an expression of a person's empathy.
Feb 29, 2016 ... Learn about possible causes and treatments for excessive yawning. ... Obesity is
an epidemic in the U.S. This condition puts people at a ... This feature is for
informational purposes only and should not be used to diagnose.
Jun 10, 2013 ... The study found that people were more likely to yawn during the winter, when the
.... The 12 Types Of Trips You Should Take In Your Lifetime ...
Sep 6, 2015 ... 8 reasons for excessive yawning you probably didn't know about. ... The study
also stated that people suffering from multiple sclerosis suffer ...
That's because when you are tired or bored, your breathing tends to slow down.
As a result, your body tries to take in more oxygen by yawning. Some people ...
May 12, 2014 ... A new study has suggested that the reason we yawn has nothing to do ... a video
of people yawning were 41 per cent likely to yawn themselves ...
... big yawn, cover your mouth out of courtesy and watch to see how many people
... We know it's involuntary because we do it even before we're born: According ...