To fit or to flop?

A lot of people have been asking me recently what I think of Fit-Flops (the new flip flop which promises to give you a workout while you walk.

Anything which gives you something for nothing makes me dubious- but could there be something to it? All of these shoes, like MBTs and the new Reebok tone ones work by challenging your balance so you work your core muscles (mainly around your middle). So you will be using your abs slightly more. As for toning up your legs, it's unlikely but if they're comfy then why not?

Word of warning though - none of these shoes are great for exercising in and could cause you a serious injury if you do. They do the opposite to what a good running shoe should do - give you stabality and support.