The "Rolling In the Deep" singer in February. - Ian Gavan/Getty Images
"I gave up smoking for two months. It was f---king grim. I had laryngitis about a week before the album came out and it was so frightening. I stopped smoking, drinking, eating or drinking citrus, spicy foods and caffeine. It was so f---king boring. Whenmy album went to number one here and in America, I just sat in my room and watched TV because I couldn't go out and talk to anyone. My voice was better when I wasn't smoking. Within a week I noticed it had changed, but I'd rather my voice be a bit s--t so I can have a f---ing laugh."