The
Science Behind Yawning Will Exhaust You
The human body experiences involuntary actions every day, but
Yawning may be the most elusive.
Nearly every
animal with a spine yawns for one reason or a**ther — penguins yawn as a mating ritual, guinea pigs use the action to demonstrate anger and humans yawn for different reasons.
[IMG]http://rack.2.mshcdn.com/media/ZgkyMDE0LzAzLzEzL2ExL3R1bWJscl9tNHdzLmQ5OTY0LmdpZg pwCXRodW1iCTU3NXg0MDk2Pg/e5e0d64d/838/tumblr_m4ws**x1v51qd4q01o1_400.gif[/IMG]
Image: Imgur, GrimReaperPT
AsapSCIENCE made this short, yet informative
YouTube video to explain the
Science Behind the human yawn. And you may be surprised, it's **t as simple as just being tired
Scientists believe that humans yawn as a way to cool our brains.
Yawning increases blood flow, heart rate, facial muscle use and forces air into your head, which all help cool the brain. Exhaustion and sleep deprivation does increase your brain temperature, explaining why we yawn more when we're tired
Read more...
More about
Viral Videos,
Yawn,
Science,
Watercooler, and
Videos