<p>'Chad took a deep breath. He pulled on his goggles, pushed them up onto his forehead and slipped on his swimming cap. It was time for the men's 200 meter butterfly final at the London Olympics of 2012. This was the moment he had been dreaming about for over a decade.'<br>This is the story of Chad le Clos, Olympic gold medallist and record breaker, the swimmer with the never-say-die attitude.<br>It all started on a beach in Durban: every Sunday...