Has anybody ever tried these? I'd seen people doing DB work on the swiss ball at the gym before and last night gave it a try. I got great contractions in my chest. Had to go lighter than usual, but it was great for a little change..give it a try.
Dunno, I think if I tried this, the f'in ball would pop. I don't know how much weight they can take but a couple of heavy dumbells and that's a fair bit of confined PSI on the ball.
I see them doing that at the gym too, but they are usually like 20-25 lb dumbells.
Please Scroll Down to See Forums Below 
