By now, you’ve probably seen a plethora of ads for the lastest and greatest footwear innovation – toning shoes. Reebok, Skechers, MBT, and others have hopped on the toning shoe bandwagon started, arguably, by Fit Flops.

I’ve seen folks of all ages wearing them – some are hardly noticeable, and others look downright ridiculous, with their sloped soles. Even Joe Montana is a believer as the spokesman for Skechers.

But the bottom line – do they work? Interestingly, the American Council on Exercise says no. In a recent study by the nonprofit organization, there was conclusive evidence that proves that the shoes are no miracle, no matter what model you choose.

To read more about the debate, check out the Wall Street Journal’s overview on the issue.