Created by Tom Fuller aka-“RAGE”, a national-level competitive bodybuilder Hell Raiser Training (HRT) & Hellcentrics comprises a full exercise range of motion eight reps immediately followed by four Hellcentric (negative) reps. Hellcentric reps consists of two parts: a partial and a full negative. Tom highly suggests a person have accomplished two solid years of dedicated training prior to acclimating to Hell Raiser Training.