In this brief session Karen illustrates how one exercise – in this case, The Roll Up – is practiced throughout the studio on different apparatus. She works with Dena, who has a tight low back and struggles with finding length in that area as well as the c-curve. Seeing the Roll Up as part of an 'Exercise Family,' in that it can be practiced on different apparatus to target different needs, can help you do it better. For instance, Karen shows how the Roll Up on the mat is the same exercise on the Reformer in the Elephant exercise, where Dena's feet and hands are grounded and she works with a spring. On the Reformer, Dena can feel how the Elephant exercise refers back to the basic exercise on the mat.