. >> sam morrison did one back flip every single day in 2011. >> whoa. >> that's 365 back flips. sam's dad bet him $100 that he couldn't do a back flip every single day for an entire year. >> basically his dad was challenging him to keep something up for a year. >> you can tell as the snow starts to melt and the weather gets warmer, he's getting better and better at these things. >> pay close attention to this back flip. >> oh, he is naked! >> dude! >> at least we can tell if he's cold. >> and finally, new year's eve 2011, the grand finale of one whole year of back flips. >> aw! >> i hope he gets it all back. >> he rolls in it. >> to tell us more about this adventure, we have sam morrison himself all the way from syracuse university in new york. >> the back flips weren't that difficult. it's the idea that you have to commit to something and follow through with it every day. >> how did you prove to your dad were you doing it every day? did he demand proof? >> at first he was kind of taking my word for it then i realized i should put up a blog about it so he could check ever are i d