Wow..wow..wow. I still am amazed. I have suffered with bone on bone arthritis, hip replacement, back and knee pain for several years. I got so bad I was planning my life around it. Never plan anything after lunch because my pain would be to bad. Fearing losing my job for so many call outs.1st day with this device I worked all day, when to the grocery store and did a walking workout. I am looking forward to a good night's sleep without having to turn every few min.   P Brown