/b/sixpacksmackdown/posts/high-definition-abs-circuit-workout-review-how-to-get-six-pack-abs I recently completed the High Definition Abs Circuit Workout found at Bodybuilding .com and it was a dandy! It was a pretty intense cardio and ab workout. It was a superset of one ab move followed by a cardio move. There were 5 back-to-back, we tooken-USTelligent Community 11 Non-Production