I was wondering since there are a lot of commercials, presenting electric stimulation. If they are any good. The're not for me personally, but for a friend who has a back problem. Not being able to go to the Gym or have any strenious exercises, could this be something. It's not the purpose to look really muscular or anything, just to use on the Abs, and buttocks, to get them toned. Any advice is welcome. Maybe there are some of you who have used it, and could give me some extra information. Thanks a lot.....

