The Real Reason We Yawn

December 16, 2008 at 9:03 pm | Posted in Lifescape | Leave a comment
Cat yawning. Vibrissae are easily seen.
Image via Wikipedia
I have seen monkeys yawn -and quite profusely at that. As this appears to be a common trait of both man and monkeys it has set me to wonder how this feature evolved in the first place. The conventional explanation often heard is that yawn is an indication of boredom. But is there anything like boredom in animals like monkeys if so what is it that they are bored of. If the monkeys are in our proximity it might be quite real that they are utterly bored with us knowing well that how tiresome some of us could be. But now comes the scientific explanation and I am somewhat relieved. Next time I inadvertently revert to this ancestral trait in presence of some valued guest I have a cool explanation.
clipped from dsc.discovery.com

Dec. 15, 2008 — If your head is overheated, there’s a good
chance you’ll yawn soon, according to a new study that found the primary purpose
of yawning is to control brain temperature.

Yawn

The finding solves several mysteries about yawning, such as why it’s most
commonly done just before and after sleeping, why certain diseases lead to
excessive yawning, and why breathing through the nose and cooling off the
forehead often stop yawning.

The key yawn instigator appears to be brain
temperature.

“Brains are like computers,” Andrew Gallup, a researcher in the Department of Biology at Binghamton University who led the study, told Discovery News. “They operate most efficiently when cool, and physical adaptations have evolved to allow maximum cooling of the brain.”
Reblog this post [with Zemanta]
(‘that’ is a basic word)

Leave a Comment »

RSS feed for comments on this post. TrackBack URI

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Create a free website or blog at WordPress.com. | The Pool Theme.
Entries and comments feeds.

Follow

Get every new post delivered to your Inbox.

%d bloggers like this: