The `Born This Way` hitmaker is a big fan of the alcoholic beverage as she thinks it helps her creativity but maintains her toned figure by hitting the gym even if she is suffering from the after-effects of too much alcohol.
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."