There are multiple theories as to why people yawn in response to seeing others yawn. One theory is that contagious yawning is a result of the power of suggestibility. Another theor...
Yawning can indicate boredom or tiredness.
There are many theories about why people yawn, but no one knows for sure.
This "contagious" yawning has also been observed in chimpanzees, dogs, and
.... do not increase their yawning frequency after seeing videos of other people ...
Sep 23, 2011 ... People yawn more easily in cooler temperatures, supporting the idea that ... 23,
2011-- Why do we yawn? ... So do most vertebrate animals.
Jun 10, 2013 ... We all do it, and we all know it has at least something to do with how tired ... In
some people, excessive yawning could be a reaction caused by ...
Why do people blush? Why are humans altruistic? ... Now that we know what a
yawn is, let's look at what causes us to do it. On the next page, we'll discuss four ...
Aug 19, 2014 ... Scientists working to unravel the mystery surrounding the yawn, and why it's
contagious, have discovered that yawning is much more ...
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 ...
If you yawn in class, you'll probably notice a few other people will start yawning,
too. Why is that?
Aug 12, 2014 ... And then you can ask people to experiment on their yawns – like closing the ...
has tried to explore a millennia-old mystery: why do we yawn?