Arsène Wenger on sweat, suffering and selfishness

"When I lose it, I lose it in a dangerous way." The former Arsenal manager has experienced the immense highs and the catastrophic lows of the highest tier of football. In the lead up to the release of a documentary on his life, he talks to Chris Godfrey about his all-consuming love of football, single-mindedness and the toll his job took on his life.