"I'm as useless as a slug right now. I've had a rotten cold... and it's leaving me breathless and I can't hold any of my notes when I sing. And I don't sound like myself either, because I'm all bunged up and croaky. I have all day to get better without having to sing or really do anything so fingers crossed I'll be better." Adele assures fans she's resting to ensure a speedy recovery, after cancelling the start of her U.K. tour due to a chest infection.