I've never used one before...but I think if I learned how to use one, it'd really give my workouts that extra umph. (I've seen them used for ab workouts but I've also seen them used for the upper body as well).
But my question is how much should I spend on one? I certianly don't need a top of the line model because I'm not even sure I'll enjoy using one -- but I don't want junk either.
Any suggestions?


Seriously, though...providing I'm patient...I could really use this as a chance to get the kids moving, too.
- but I heard even just sitting on that helps with balance (which in turn, has a slight effect on keeping your butt muscles toned and back aligned)