Someone gave me one for home and I gave up within a couple of days of trying it, and threw it out. BUT, I was SO embarrassed in other ways at the pt place, some of the chiros, etc. The electric shock, the weird gyrations, the public cracking...
Two weirdos here at work sit on those $&*#@( balls instead of using chairs! Bet you can guess who they are voting for.
I've found the deep muscle massage therapy and a SelectComfort mattress to be better than a chiro for me...and walking the poochies is always a good thing for my spine.
*Groaning*