Jane and JMK, is the Teeter Hang-up one of those inversion things? I bought a BioMat, which is a large infrared heating pad, which feels WONDERFUL on my back. It's also excellent for my circulation. There are smaller, cheaper units available, too. The intrared heat penetrates much more than a standard heating pad and it's a "nicer" heat. Hard to explain, but it sure feels good. These old bones (mine) need all the help they can get.