My teen takes it with a wonderful instructor in Smithfield. My almost 6 year old is dying to take it too. She said if I can find another child or two at this age she will start a class on Wed Pm's for them. She is VERY affordable and a great teacher. (and a soldier!)
Japanese Martial arts? Sort of like a form of karate. http://www.metacafe.com/watch/381173/what_is_bujinkan_budo_taijutsu/