I've been working out with a trainer for about 6 weeks, and wanted to have a workout at home for use over the holidays, and to start working out on my own. This is the first workout video of any kind I've ever used, and here I am looking for more tapes because I felt I did get a benefit out of this one.
I had to stop and put more air in my ball, too, though - but I see that Liz Gillies has another video: "Stability Ball Workout for Dummies" that evidently explains how to choose the right size ball. I thought the ball I had was the right size for my height - but hers still did look larger....
Since I'd gotten familiar with using the ball with the trainer, I didn't have problems with following her instructions. This was just right for my level. I guess it was a little short - because I found myself thinking "more!". So, now I'm looking for more tapes!
Different people will get different benefits because of their individual fitness levels. I'm in fairly good shape, but need cardio and toning. I did about 20 minutes on a stair stepper before I started this tape. So, along with this tape, I got a good workout. I can see where as I outgrow this workout, I can find ways to make it more challenging.