Hi @johnbishop, I think the cheaper whole body vibration plates, in the range of $150.00, are high intensity vibration exercisers that Margaret Martin has noted can be dangerous. The Low Intensity Vibration plates, developed by NASA and a Dr. Rubin, for improving the astronauts' bone density, sell for a few thousand dollars. The Marodyne LIV is one of these.

I used the Eilison Bolt for nine months, but after reading Margaret Martin's articles and listening to her podcasts, I gave it away.