Irish actor Colin Farrell used his love of cigarettes to get himself through the most strenuous moments of the military bootcamp he underwent before filming new movie Alexander.
The Dubliner refused to quit for the film, and, instead, rationed his smoking so he'd work even harder.
He explains: "I didn't try to quit. I made sure I didn't have a cigarette first thing in the morning and I waited until after the jog. It kind of gave you an incentive to jog back to base."