/b/sixpacksmackdown/posts/smackdown-5x5x20-fat-shredder-workout This is the Smackdown 5x5x20 fat shredder workout. It is a spin on the MusclePharm 500 rep workout. We break out the sets into sets of 20 reps. This allows us to move at a faster pace and let each muscle group recover for a few minutes. By doing thisen-USTelligent Community 11 Non-Production