I always want to start with Susan's tape when I begin to exercise after a long lay off (which can be anywhere from a few months to a year). When you use her video you can work at any level and still feel like you have accomplished something. I always do my work outs in the early morning and not being a morning person I need a video partner who will motivate, encourage, and generally get the most out of me.
Susan is one of the few who can do that. Finally, after the first few days of following the video (because step exercise is so repeticious) I can be anywhere - doing anything in my head while my body goes through the motions.

Heidi Bussiere