'The Evolution of Sleep' for the Huffington Post- Evolution

One in a series of GIFs made with @Anchor Point. They were for an article in The Huffington Post on the evolution of sleep and what it can teach us. Check out the full article here: http://www.huffingtonpost.com/entry/what-can-the-evolution-of-our-sleep-habits-teach-us_us_56f2979be4b04c4c376097e8