总的核心

The Total Core abs starts with a jerking motion, which causes stain on the neck, shoulders and lower back. The Total Core eliminates this first jerking motion and then guides you through a smooth, full range motion that far exceeds the range of a typical crunch while you are comfortably seated and properly supported. The secret behind Total Core is the unique, progressive resistance system that "pushes" you upward with more of a "push" in the beginning of the movement when you need it most and less toward the end. But there's more! Total Core turns the crunch "upside down", because on the way down, your pushing against the same unique progressive resistance, which works your lower back muscles and the "back" of the core.. Works abs, obliques & lower back all at the same time Packing:1set/carton Accessories:Meal Plan , Slim Down DVD Qty/20'FCL: 720pcs Qty/40'FCL: 1490pcs Qty/40'HQ : 1700pcs.