The techniques Heavy Duty prescribed foremost were forced reps, negative reps, rest-pause, and pre-exhaust, especially pre-exhaust supersets. Failure wasn’t enough for Mentzer’s Heavy Duty system. Choose a weight so heavy that you reach absolute failure at 6-8 reps. Whereas Arthur Jones prescribed one 20-rep set per exercise, Mentzer lowered the ideal rep-range to 6-8.
Mike Mentzer advocated a heavier form of HIT.
