I bought the Infrasound 8 [Latest Version is CHI Palm] many years ago for my fiancee who had RA. It initially helped him with sleep and pain. He then moved onto other therapies.

I then began using it on my clients (massage therapy, energy healing, holistic therapies}. In the beginning of a session, I would place the transducer either in the front/sternum area or the mid to upper back &/or on a particular area. You could visually see the inflamed tight areas relax and they would be calmer.

Kimmergy