5 Weird Involuntary Behaviors Explained!

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Why we yawn, why we hiccup, twitchy eyes (and more)!
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Our bodies do a lot of weird things, and many of them are completely 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/prod...

Read more:

Aristotle's "Book of Problems" free online: http://www.gutenberg.org/files/12699/...
(it was probably not written by Aristotle, but instead collected after his death)

Yawns: http://www.bbc.com/future/story/20140...

Eye twitches: http://www.straightdope.com/columns/r...

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

Hiccups: http://www.bbc.com/future/story/20140...

Sleep twitches: http://www.bbc.com/future/story/20120...
http://www.bbc.com/future/story/20120...

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

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.DFollow me on Twitter: @jtotheizzoe
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Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
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Theme music:
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Last week's video:
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