when DH had back issues the PT put him on one (supervised). DH loved it.

I, on the other hand, wouldn't dare attempt to use one. Just picture: my husband would resort to calling the fire dept to get me off/out of it. While they stood around in fits of laughter, recording scene for Youtube, would probably be when my bladder decided to let go, etc...

just think- the video could go viral and we would get invited to the Today show or GMA