What's Lady Gaga's fitness secret?

Pop star Lady Gaga has revealed she stays slim by drinking whisky and then hitting the gym even if she has a hangover.

"I am on the drunk diet. I live my life as I want to, creatively. I like to drink whiskey and stuff while I am working. But the deal is I've got to work out every day, and I work out even if I am hung over," contactmusic.com quoted her as saying. "It's about the cross-training and keeping yourself inspired. I have to say, I do a ton of yoga," she added.