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5 Weird Involuntary Behaviors Explained!

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 Biology   |   Health   |   Science
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Yawns, hiccups, twitchy eyes (and more) explained!
Subscribe to It’s Okay To Be Smart: http://bit.ly/iotbs_sub
↓ More info and sources below ↓

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Our bodies do a lot of weird things, and many of them arecompletely involuntary. Why do we often jerk our bodies awake right before falling asleep? Why do we yawn? Why do we hiccup? Why do some people sneeze when they look at the sun? And why does your eye twitch? This week we’ll look at the science behind these crazy involuntary behaviors!

MY T-SHIRT:http://www.cognitive-surplus.com/product/science-is-magic-that-works-shirt-organic/

Read more:

Aristotle’s “Book of Problems” free online: http://www.gutenberg.org/files/12699/12699-h/12699-h.htm#BOOK_OF_PROBLEMS
(it was probably not written by Aristotle, but instead collected after his death)

Yawns: http://www.bbc.com/future/story/20140811-warning-this-may-make-you-yawn

Eye twitches: http://www.straightdope.com/columns/read/1603/what-causes-my-eyelid-to-twitch

Sun sneezes: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2821404/

Hiccups: http://www.bbc.com/future/story/20140127-do-hiccup-remedies-work

Sleep twitches: http://www.bbc.com/future/story/20120522-suffer-from-sleep-shudders
http://www.bbc.com/future/story/20120522-suffer-from-sleep-shudders

Post-micturition convulsion syndrome: http://io9.com/5810102/the-science-of-pee-shivers

Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Follow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com
Facebook: http://www.facebook.com/itsokaytobesmart
Google+ https://plus.google.com/+itsokaytobesmart
For more awesome science, check out: http://www.itsokaytobesmart.com
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc.
Kate Eads - AssociateProducer
Andrew Matthews - Editing/Motion Graphics
Katie Graham - Director of Photography
John Knudsen - Gaffer
Dalton Allen - Post-Production Intern

Theme music:
“Ouroboros” by Kevin MacLeod

Other music via APM

Stock images from Shutterstock

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Last week’s video:
There’s no such thing as cold: https://www.youtube.com/watch?v=Akd7MMRKDwc

More videos:
Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA
Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9mtXnJfM
The Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-LpJn3Is
There Was No First Human - https://www.youtube.com/watch?v=xdWLhXi24Mo
How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p6A6xnY

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