Pilates Reformer is a coil based resistance workout performed on the machine that founder Joseph Pilates invented. The powerhouse muscles--the muscles of the core--are paramount for building strength. Flat abs, strong backs, toned buttocks, and firm thighs are all results of this method. Both the equipment and the exercises can be modified and adjusted to any body, which makes it perfect for those looking to tone up, rehab from an injury, train for a particular hobby or sport, or for those looking for low impact, full-body workout.