martial art as it gets. no ring, no octagon. the rules are simple. known as okinawan sumo -- >> whoa. >> -- it looks easy. it's not. your hands are wrapped in your opponent's belt. object is to get him onto his back, both shoulders, before he does it to you. nice. you land on your back for even a second, you lose. >> there, he got him. yeah. awesome. >> would you like to try? >> try. >> yeah, sure. ♪ ♪ ♪