We are in our 70’s and initially purchased one of the 5 therapy mats. We initially looked at a Bemer (MLM) but the cost was outrageous and it only has one therapy. We liked the Healthy Wave mat so much that there are now 4 mats in our family. I did some heavy lifting yesterday and injured my back so bad that I couldn’t bend over. Last night I slept on the mat and the injury was remarkably better this morning. Then, later today I got on it again and the pain is almost gone. I now have no trouble bending over, just a little soreness. My wife has had the same experience with minor aches and pains. Our son is paralyzed in the legs and began sleeping on the half mat underneath his legs and the swelling in his legs and feet has been reduced. The fourth mat I gave to my older brother, who for some reason has not used it. I honestly am not sure which of the therapies does what—maybe it is all of them contributing. But the one I can actually feel is the heat which is unlike anything I’ve ever experienced and I’m confident it is having a positive effect. It is so penetrating, unlike a heating pad which only heats the skin. I sleep on it nightly. My wife gets on hers when she has trouble sleeping and it does the trick and believes it is because of the heat. With the number of mats we have purchased you have to expect some issues, and we had one with a controller. The problem was promptly resolved. The customer service has been excellent. Pam is an absolute delight to work with—absolutely the best customer service person I’ve ever worked with. Great product!!! Great customer support!!!