What is a zero runner and why should you use one?
I've been a runner for a long time, but I still found myself staring blankly at a strange-looking machine in the corner of the gym last week, wondering what is a zero runner and why everyone seemed so obsessed with it. It looks a bit like an elliptical that had a futuristic makeover, but once you actually get on the thing, you realize it's something else entirely. It's designed to solve the biggest problem we runners face: the constant, bone-jarring impact that eventually wreaks havoc on our knees and ankles. ...