She told Sirius XM radio: "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 hung over if I am hung over. And it's about the cross-training and keeping yourself inspired. I have to say, I do a ton of yoga."
Gaga – who revealed last week she couldn’t remember celebrating her Grammy win because she was drunk – has previously caused controversy with her extreme dieting methods.
The 24-year-old singer’s former tour manager, David Ciemny, claimed last year she would binge on junk food such as cakes and sweets, then not eat for weeks to fit into her costumes - once losing 20lbs between fittings for one of her outfits.
Describing her condition, David said: "When I say she was sick, I mean physically and mentally."
Talent scout Wendy Starland added: "The pressure on her to lose weight was very high."