Juergen Hoeller has a Diploma as a Sports Instructor/Sports Therapist, Diploma as Trainer, Licensed Boxing Trainer, 3rd Dan Ashihara Karate, 3rd Dan Taekwondo, 3rd Dan Jujitsu, further black belts in Judo and Combat Hapkido. He is a training instructor for various sporting clubs (Taekwondo, Judo, Fencing). The German National Taekwondo Union awarded him the Honorary Bronze Title. Juergen Hoeller is author of numerous books on the subjects of martial arts and self-defence. Axel Maluschka practices various martial arts forms (Ashihara Karate, Taekwondo, Jujitsu and Kickboxing). He is a pupil of Juergen Hoeller and co-author of various books on Budo.