London, Sep 2 (IANS) Upcoming Welsh singer Duffy, who had given up smoking after having moved from Wales to London, is back to the habit.Thesun.co.uk reports her saying: “Back home everybody smoked because there was nothing else to do. I started again because I just needed something to allow me to feel human again. It’s a way of getting five minutes to yourself. Before I go on stage, I have a glass of wine and a cigarette.”