Why Do We Sleep? HD

We take a look how we slept in the past, how animals sleep, and try to figure out the science behind why we spend a third of our lives asleep. Why do we sleep? How do sharks sleep? How do dolphins sleep? Do animals dream? How did sleep evolve? Do Animals dream? What does poop have to do with all this? Special Thanks To: Roger Ekirch His book: http://www.amazon.com/At-Days-Close-Night-Times/dp/0393329011 The Stanford Center for Sleep Sciences and Medicine William C. Dement Clete A. Kushida Lincoln Park Zoo Rachel Santymire Dan Boehm Shedd Aquarium Lise Watson Lisa Takaki Sleep Playlist Videos: How Science Changed Sleep Forever - http://bit.ly/1T85iVI Why Do We Sleep? - http://bit.ly/1T85h43 Why Do We Dream? - http://bit.ly/1Hkh22T How To Sleep Better! - http://bit.ly/1FMsWgt ►Subscribe: http://youtube.com/thegoodstuff ►Support us on Patreon: https://www.patreon.com/thegoodstuff ►Follow us on Twitter: http://www.twitter.com/goodstuffshow ►Follow us on instagram: goodstuffshow ►Like us on facebook: http://www.facebook.com/thegoodstuffshow Digital street team: http://goodstuffshow.com/digitalstreetteam Sign up for our mailing list: http://eepurl.com/bnSOcH The Good Stuff is a proud member of the PBS Digital Studios family _ Music By: Rob Scallon https://www.youtube.com/robscallon Kevin MacLeod http://incompetech.com/ Jason Shaw http://audionautix.com/ Jake Chudnow https://soundcloud.com/jakechudnow Image and Video Credits: Bed Painting by Toulouse-Lautrec - Henri de Toulouse-Lautrec [Public domain], via Wikimedia Commons Sleep Woman - by Aweisenfels - Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons Japanese men sleeping on train - By Tischbeinahe (Own work) [CC BY-SA 3.0], via Wikimedia Commons A Child Sleeping - By Alessandro Zangrilli (Own work) [Public domain], via Wikimedia Commons Black Rhino Footage courtesy of Lincoln Park Zoo https://www.youtube.com/user/lpzoo Two Alligators - By Mfield, Matthew Field - http://www.photography.mattfield.com (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons Eastern mud snake - By Geoff Gallice from Gainesville, FL, USA [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons Stingray - By Steven G. Johnson (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons Mako Shark - By Patrick Doll (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons Spinner Dolphins - By Alexander Vasenin (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons Killer Whales - By Robert Pittman [Public domain], via Wikimedia Commons Mallard Ducks - By Fcb981 (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons Free Range Chickens - By woodley wonderworks ((semi) free range chickens) [CC BY 2.