I don’t think there is anything particularly bad about a rubber band workout. I have seen them used at my gym. I am using it here on this site because of the awesome Flashdance style workout clothes. Who didn’t have a pair of awesome leg warmers back then? As an exercise book, I think the pictures are a bit small and they could have had more “punch” in color. Is this the worst of our exercise books? No, but it is a weeder.