Running is an intriguing sport. Indeed, for many of us, 'sport' may be a misnomer. Our focus is not on others or how we fare against them. It's just us and the road, in self-centred, meditative solitude, competing only against ourselves.This is why running is so addictive: physical fitness aside, it's the mental battles of self-discovery that keep us coming back for more, pushing our limits further than we knew we could.