Board Breaking 101-Awesome Power Series, is unique, providing information and secrets that have never been made public outside of a legitimate martial arts school This easy to read book is a MUST for all martial arts instructors, students, and enthusiasts. You will receive professional advice from Sr. Grandmaster Edward B. Sell, an American Living Legend and 50-year veteran of one of the world's most powerful martial arts systems in the world, Taekwondo Chung Do Kwan. Sr. Grandmaster Sell is known world-wide for his Awesome Power techniques.