Doing crunches on a balance ball
is like no pain I have ever known.
Sure, it's a lot more fun trying to stay on it, and it causes less stress on other body parts, but you feel it for days after.
I'd probably feel it a lot more if I didn't spend half the time on it pretending to be Superman. So much fun.
Sure, it's a lot more fun trying to stay on it, and it causes less stress on other body parts, but you feel it for days after.
I'd probably feel it a lot more if I didn't spend half the time on it pretending to be Superman. So much fun.