Hi Pamela I want to share my experiment in using the Healthy Wave Mat. I have severe endometriosis and wanted to go off my pain relievers, I tried many different remedies but nothing worked. I was hesitant at first but then I said to myself to be patient, I ended up using it for 2 1/2 months, twice a day not skipping any days. The result turned out wonderful my pain relief about 80%. I am so happy that I decided not to return it.