5 Weird Involuntary Behaviors Explained!

From the creator

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Why we yawn, why we hiccup, twitchy eyes (and more)! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe 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/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

Published 2015-01-26 · Watch on YouTube ↗
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