http://www.urbandojo.com Karate students Christian, Jordan, Nicholas, Benjamin, Sky, Damon, and Daniel use hammer fists to do power breaks. This video is from Urban Martial Arts' Board-Breaking Extravaganza Fundraiser on January 22, 2010. We raised over $400 for the American Red Cross Haiti Earthquake Relief Fund! Urban Martial Arts is a mixed martial arts studio based in the Ditmas Park section of Brooklyn, New York, NY. We offer classes for children, teens, and adults. Building on a foundation of American karate, we incorporate elements of boxing, kickboxing, MMA, grappling, Brazilian Jiu-Jitsu, and self-defense. Visit us online at www.urbandojo.com or call us at 718-287-5500 for more information.