This is one of the reasons the Mentzer cult that persists today is so irritating. Not only is his heavy duty a horse shit scam. It's a rip off of an older horse shit scam. Not once, ever, in the 50 years since the Colorado Experiment have the results been reproduced. Not once. Jones even had Both Mentzer bros and Boyer Coe going through the routines, filming and documenting progress, sets, reps etc... and nothing. Three of the top bodybuilders in the world weren't making gains and they had to scrap the project before completion and gave a load of excuses. FFS according to Jones they only had to go through 8 workouts. You mean to tell me you can't film 8 fucking workouts? They had the studio, they had the plan, they had the 'atheletes.' And produced nada.