Coming up with variations and modifications for clients of special populations is an important part of being a successful Pilates instructor. With osteoporosis clients, and their need for limited spinal flexion, you need to think of ways to work the internal and external obliques in a nontraditional way. This exercise speaks to this need and is challenging for many different skill levels. We start with the basics here, but the add-ons are endless. With the different stimuli and support from the Cadillac, this particular exercise is a great way to teach pelvic stability.