This is apparently the new thing for runners. There was a Harvard study that said normal padded running shoes train you to strike with the heel as you run, while we evolved to run striking with the forefoot. So padded shoes are thought to create knee and hip problems for runners.
My knees hurt if I've been running for awhile, so I figured I'd give it a try - haven't run for about two years now. I bought a pair of the Vibram Five-fingers, which is like a glove for your foot with a thin layer of rubbery material underneath so your feet don't get hurt on stones or glass. Been running a few times, my calves burn like crazy. Has anyone tried these out for any length of time?