I have had my Surge of Chi Exerciser for about two years now, and I love it. I bought it to help me in my recovery from M.E., and I try to use it three times a day. It is deeply relaxing and pleasurable, and you can really feel the surge of energy when the machine stops in whoosh of tingling. I can't say how much it has contributed to my continuing health recovery, as it is only part of my programme, but I do feel that it has been important. Enjoy!