Jeffrey is a Black Belt Instructor of Aamka-jutsu. He also has studied and received the rank or equivalent level of Black Belt in several Martial Arts styles, such as Sambo, Judo, Jiu-jitsu, Aiki-ju-jutsu, Kenjutsu, Chinese Kempo and Tae Kwon do. He was also an AAU competitive Wrestler with an unbeaten record.