Every week, hundreds of millions of people around the world surrender their emotions; leave them - for a while - in the hands of strangers. They might face dejection or, with luck, jubilation. The US National Basketball association say that less than 1% of fans globally will ever watch a game live. While the Premier League is played in England and Wales, almost half of the fans (470 million of them) live in Asia and Oceania. Mike Williams explains why sports fans do it.

(Photo: Sports fans pictured during a football match waving their flags. Credit: Getty Images)