Hi @johnbishop and @callalloo, another Connect member bought a LifePro Vibration Plate Exerciser that she was very happy with. I looked it up - if I recall it weighed about 30 lbs., but I could be wrong. I think it takes a while for these to work as a review of studies had most participants on the machines twice a day for 15 minutes at a time for a year. The Marodyne LIV was developed in conjunction with NASA and costs about $1600, last time I checked. The Eilison Bolt and the LifePro both have programs that they claim increase bone density. Let's hope!