"Every once in a while, a product comes along that is a game-changer. To me, the Core Coaster is such a product. I purchased this because I was told that I have a disc problem and need to strengthen my core. I tried all types of workouts, with some degree of success, but the Core Coaster is on another level. What is unique about this unit is that it forces you to use muscles that you don't normally engage in other ab exercises. This is probably due to having to balance one's self to do the exercises or you'll tip over. From my short time of use, my walking gait has changed, my hips and back are hurting much less, and I am quickly building back up the ground mobility I once had. The Core Coaster also allows for experimentation in flow movement which is a growing trend now. The unit also allows for modifications that allow me to gradually build up to advanced flow movements. Overall, a simple but great addition to my work out equipment."