I would, quite honestly, recommend this to anyone. Yes, I'm one of those CST people, and no, I'm not brainwashed. I'm a skeptic by nature.
The exercises are presented in a form that anyone can do them, starting with a "prop" for balance and ease, and moving incrementally to the unassisted exercise. The selection and sequencing of exercises is really quite brilliant - performing them PROPERLY (there is help in doing this, both on the DVD and online) is a very thorough workout. The rhythm is also calming to the mind once learned. The moves work the muscles nicely, but in building the sequence it's very clear that much work was put into the balance, flexibility and suppleness that goes along with the muscular work. Definitely not pure grunt, but rather a wholistic approach to the use and training of all the body's abilities. (I'm not saying it's the "ultimate everything," just that it's excellent and has very broad applications.)
For someone who isn't "athletic" and doesn't want to be, this is still a very good choice, perhaps one of the best. No equipment except for the "prop" used as an assist in the beginning work on the DVD, and a chair would do for this. You can do it anywhere, you'll see better returns the more you practice, and the gains in health, fitness and energy are pretty much unavoidable by my experience.
Definitely worth a go.