Have you ever felt the sand between your toes or the coolness of grass under your feet? That direct connection with the earth ...

Unless you’ve been living barefoot all your life since childhood, your feet are accustomed to some support and are not adapted to function without shoes all day long, they caution.

Given that one of the most common cues in training is to push through your heels, it doesn’t make sense to have them bunched up inside a cushioned shoe. “When we have bare feet we can connect ...