I have heard they work your abs very well in a variety of ways but i already have a declined bench for crunches and a weight ball. Is there much else i can gain from a swiss ball?
Just to let you know, you can do a heck of a lot more exercises on a swiss ball than just your abs. If you work out at home, then I think it would be beneficial to purchase one. JMO !!
I agree!! The physio ball is a great way to add a balance challenge to a wide variety of exercises from chest presses to cobras....
Great investment as they are not that expensive.