The Funniest And Most Painful Stunt Fails | You Have Been Warned

See some of the best stunt fails and successes, and find out the science behind why they worked - or why they went completely wrong! Subscribe to Discovery UK for more great clips: http://www.youtube.com/subscription_center?add_user=DiscoveryTV Follow Discovery UK on Twitter: http://www.twitter.com/DiscoveryUK