Some people can yawn
when their nervous or if they see anyone else yawing.
Earlier research has shown that when people believe they are being watched, they yawn
less, or at least resist the urge.
As far back as 400 B.C., Hippocrates pondered the origins of the spontaneous yawn
. That is, a yawn
that occurs without the prompt of someone else's yawn
You would be surprised to know that when 60-70 percent of people see a person yawn
in real life or in a photo, they get an urge to replicate the action, according to a new study.
The book's title reflects the 20 yawns
placed throughout, and children will have fun counting them.
If you yawn
excessively, that doesn't mean you have one of these serious conditions, but it should warrant a discussion with your physician.
Autism and schizophrenia sufferers are reportedly less able to catch yawns
, researchers said, so understanding the genes that might code for contagious yawning could illuminate new pathways for treatment.
Individuals with autism or schizophrenia - which involve social skills that are impaired - exhibit less contagious yawning even though they still yawn
spontaneously, explain the investigators.
The experiment registered no significant differences in the dogs' heartbeat, making it unlikely that the yawns
were signs of anxiety, the researchers report in the journal PLoS One.
Dare You Not to Yawn
written by Helene Boudreau illustrated by Serge Bloch Candlewick Press, 2013 978-0-7636-5070-4 (he) $18.00 for Toddler to Kindergarten
So, if we didn't yawn
, according to this theory, taking a deep breath would become harder and harder.
WAITING to enter the world is a tedious business, so perhaps it should come as no surprise that foetuses yawn