I was wandering through a store the other day and saw this doodad for push-ups. The site for the product is here. When I was in the military, I was doing 150 push-ups a day at one point (training for a competition), and I enjoy the exercise. I've been out of training for a while now, and can probably only push out like 40-50 before wearing out. This product advertises itself as being superior for joints and isolating the appropriate muscles. Now that I'm back in the military and with about seven months until I head to officer training, I'd like to get back into superior form. My question is this: has anyone tried this product? Does it perform as advertised, or it is just a gimmick? I'd appreciate any info.