I have always had tight muscles in my lower extremities and being a physical therapist I know how important it is to maintain flexibility. It feels as though there is a partner there with you advancing the stretch each time. I would highly recommend this device for patients because they are able to use techniques such as contract-relax by themselves and in the meantime relieving pressure from their lower back. This is a great product for anyone to use. Not only does it help maintain flexibility, but it increases it as well.