According to this Get a Hot Summer Bod article, Minka Kelly, John Mayer's ex, was feeling porky after indulging in too many of her faves -- pasta, pizza and ice cream -- and lost 15 pounds in one month by not eating after 6:00 PM, doing Bikram [hot] yoga and going to bed.

Gwyneth talks about the 40 pounds she gained with her pregnancies and admits that seeing her post-baby body was a little scary. "It's all lovely when you are pregnant; but when you are not pregnant and you haven't been for a couple of months and you are still carrying tons of extra weight and everything's all hanging and sagging, you think, How is this ever going to go back? But it does. If you do a lot of working out," she tells Harper's Bazaar.