The Atleticore Bodyweight Exercise Wheel is effective in strengthening your core, not only because it targets your abs, but also because it works the muscles of your lower back. You need strong back muscles to counteract the natural arching of your back that occurs as you roll forward on the wheel. Exercising with this wheel requires that your core muscles work together to properly execute the movement, allowing these muscles to contract as a group. By contrast, exercises that target only your abs or your back may result in a core muscular imbalance. Additionally, the exercise wheel offers variety when you are bored with your current core-strengthening routine. Conveniently, portable and easy to use at home or in the gym, also perfect for traveling or exercise on the go.