MAD-1 is amazing. I recently had an excruciating tendon injury to my thumb/wrist, and used the MAD-1 device for several days, most hours of the day. The healing has been incredibly quick. A previous similar injury took weeks to repair: it is almost unbelievable that in a matter of days my hand is able to type this. It's so easy to use, completely non-toxic, and I think every house should have one. It should be widely marketed: tell all your friends about it! Rosa