Sport Relief and the Sainsbury's Sport Relief Games: http://goo.gl/UAKUr2 Sport Relief interactive video: http://www.youtube.com/watch?v=TG2vTwKyDMM Follow Michael Stevens on Twitter: https://twitter.com/tweetsauce Ruis Martins animation: http://ruimartinsartwork.tumblr.com/post/17299782876/http-www-behance-net-rui-martins http://www.behance.net/gallery/basic-instint/942241 Muybridge images: http://www.buzzfeed.com/angelameiquan/muybridge-photographs-reinvented-as-animated-gifs-70fn Prince Randian clip from "Freaks": http://www.youtube.com/watch?v=66Pgw_nUlMw Reddit comment thread: http://www.reddit.com/comments/gibxk Persistance hunting YouTube video: http://www.youtube.com/watch?v=826HMLoiE_o etymology: http://www.etymonline.com/index.php?allowed_in_frame=0&search=bottom&searchmode=none http://www.etymonline.com/index.php?term=bum http://www.etymonline.com/index.php?allowed_in_frame=0&search=sole&searchmode=none http://starling.rinet.ru/cgi-bin/etymology.cgi?single=1&basename=/data/ie/germet&text_number=+++113&root=config http://goo.gl/2j8Brg Cedric Watts paper: http://www.humnet.unipi.it/dllm/materiale/Cedric_Miranda.pdf Navasana yoga pose: http://yoga.about.com/od/yogaposes/a/boat.htm butt (unit of measurement): http://en.wikipedia.org/wiki/English_wine_cask_units rectal volume: http://gut.bmj.com/content/30/4/496.full.pdf Prince Randian: http://en.wikipedia.org/wiki/Prince_Randian History of Mooning: http://www.slate.com/blogs/browbeat/2012/06/27/mooning_a_history_when_did_people_start_baring_their_butts_as_an_insult_.html Seymour Butts: http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=butts&GSfn=seymour&GSbyrel=all&GSdyrel=all&GSob=n&GRid=109627504&df=all& Dick Swett: http://en.wikipedia.org/wiki/Dick_Swett Cats on glass tables: http://twentytwowords.com/2011/05/18/9-pictures-of-cats-on-glass-tables-from-below/ Bottoms and attraction: http://www.jstor.org/discover/10.2307/2460501?uid=3739256&uid=2129&uid=2&uid=70&uid=4&sid=21103293991803 http://deepblue.lib.umich.edu/bitstream/handle/2027.42/26924/0000490.pdf?sequence=1 Humans and running: http://www.jefflewis.net/blog/2006/07/follow_up_physical_comparison_1.html http://news.bbc.co.uk/1/hi/magazine/8732434.stm http://www.reddit.com/r/running/comments/1g8prw/an_interesting_interview_with_an_evolutionary/ http://en.wikipedia.org/wiki/Endurance_running_hypothesis http://en.wikipedia.org/wiki/Persistence_hunting Also: http://i.imgur.com/f0TcVqn.gif ******************* MUSIC by http://www.youtube.com/JakeChudnow *******************