My Hypervibe does what it was expected to do. I have had my machine for almost a year. In the first two months, I had an issue with the machine in that it did not work. I contacted the company and they put me in contact with a service rep and with my help, the repair was made at no cost to me. Next, I had back surgery last July and needed to lay off the machine for several months. My legs got weak from lack of exercise, but now I am seeing some improvement. I have been working out at a gym a little for my legs and slowly getting back on the Hypervibe with short sessions. Still work to do, but I am pleased with what I expect the vibrations will strengthen my legs.