What’s the Best Size for a Crunch Ball?

I need a Swiss exercise ball for crunches, having endured a huge move that had me leaving behind a giant amount of stuff. While shopping for stabilizer balls, I started to question what the best size was. This is where I need your help!

Do you crunch with a ball, and what size do you use? MuscleGuy weighed in on his blog, stating that “A larger ball has a gradual arch, so you’ll feel less of a stretch in your abdominals, while the more abrupt arch of a smaller ball puts your body in a more pronounced stretch position. As your flexibility improves, drop to a smaller size.”

So do I just go with the biggest one because I’m incredibly not-limber, or a slightly smaller one to work myself a bit more? Opinions would be lovely!

Plus, if this is true, I need to start switching to a stabilizer ball for my day work anyway.

Photo (c) Totally Fitness