I'm just outside NYC, but I haven't seen the ad. Is this the same rebounder that used to be called a "mini-tramp"? If so, I had one. I found it fun at first until I got tired of the workout that came on the accompanying video. It's as aerobic as you make it and I built some leg muscle using it. I got bored pretty quickly, though, as I had to keep coming up with interesting routines, something I'm not all that good at. Definitely low-impact.