I want to know what you think is the toughest Ab Exercise! Is it the “Plank”, Straight Legged Leg Lifts, V ups, Reverse Crunch, come on tell me what you think is tough. Once I get a list, I will add The RollerSizeR® Ab Toner to the exercise to see if it makes the exercise easier, BETTER or even tougher! And I will make a drawing too!
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