When I read in some reviews that this device is very strong, I was looking forward to it! I can tolerate very firm massage very good, but this device taps into the weakest setting very, and set higher, it suggests a nearly. And I did not feel that my tensions could get better, rather it excited me and I was far from relaxing. I wanted to really give my mother, but with their arrhythmia can take it at all. Unfortunately, I send it back and make me continue to look ... the way you have to prepay the return ... shame I had not previously read, so watch out. Even with Amazon returns are not always free!