Kate Winslet appears naked in her upcoming film The Reader. She doesn't use a body double and disputes weight-loss claims. What's her secret?

"My mantra is 'keep it simple,' " the five-time Oscar nominee tells the U.K.'s Daily Mail in a new interview, revealing that she cooks at home and she eats anything except pasta –

"It gives me a stomach ache." She's also a Pilates person!

"I have a mat and little hand weights and I do a stomach thing and a bum thing. It's very simple – you barely break into a sweat," she says of practicing to a DVD "on the living room carpet."

"Here's what's so great about it: no one's looking at you, no one's telling you what to do or work harder or anything like that," says Winslet, 33.

"I know it seems slightly tragic but it's my way of exercising in a time-efficient way."