Physics in the form of chop-socky kung-fu theatre! Technique, Training, Focus, Power. All are important when trying to break boards bare-handed. However, there are also important physics that explain why the boards are broken...and not my hand (or head). "Slag" courtesy of "A Childs First Funeral" (http://www.myspace.com/achildsfirstfuneral) and used with permission of the artist. The other music is public domain.