Hi Michele, The ARC is a lighter, more portable version of Joe Pilates small apparatus invention, the Spine Corrector. It's a versatile tool for spinal mobility, alignment, strength and full body conditioning. It gives you many, many options for working the body, at times adding support and others, reducing leverage making a movement more challenging and isolating. The ARC has more options with the removable seat and the option of using it upside down where it can rock and become unstable. It's a GREAT tool, The Spine Corrector in not new, the ARC is a updated version of it through Balanced Body.
Great class. It felt great and I used some of it with my students. I can get stale because I work mostly be myself so it really helped kick in my imagination. The rotation movement was such a good addition. Thanks Tom and PA, you keep me inspired to teach!