Messi, Robben, Ronaldo, Sterling, Iniesta – these players, and many others, all have something in common. Not how much they’re paid, their on-field creativity, or their level of fame – it’s a key physical attribute of their game. Small steps. Running and movement expert, John Marsh examines natural running and what makes this so devastating on the football pitch. Over recent years there has been a large movement in endurance running circles called ‘natural running’ or ‘barefoot running’. It’s unclear from where this sudden trend…