Was a little worried about injuring myself so I started fairly slowly. However, within just a few weeks, I felt both confident and comfortable enough with it to develop my own, fairly strenuous, wide range of motion, ten minute routine. What's most impressive about the thing is that it allows me to work muscles in my torso (particularly, just below the sternum) that crunches and other more traditional ab exercises, weren't getting to. You'll feel it right away. Great little tool. Well built and easy to use.
So come on people, give the companies a chance to make good before you give them bad reviews. This little device really works if you use it properly. I have read on Aikiki a few grumblings about the DVD being defective, and the resultant bad review and bashing of the product as a scam. My DVD was defective as well, I sent an email to the company and received a reply the same day and they mailed out a new DVD to me immediately.
As a joke I tried it on my cat and he loves it. Everytime he sees it he wants me to rub it down his back. Works well. Relieves tightness.
My measurements are Bust 36, Waist 29, Hips 38 1/2. I highly recommend this jacket. Bought it for my trip to Iceland and am looking forward to using it. It's extremely warm and everything I wanted in a winter jacket. I was a bit skeptical about what size to order since reviews were either saying the jacket ran small/ran large but I feel like this jacket fits as expected.
I purchased for outdoor hiking (in the very cold) and it kept me really warm. So warm, that when it started to get cold/snowy outside, I wore it to work (over a shirt and tie) and also used while snow shoveling. I absolutely LOVE this jacket.