Jennifer Lawrence doesn't diet.

The 21-year-old star of forthcoming movie 'The Hunger Games' admits that while she loves to hit the gym, she does not enjoy depriving herself of food.

She said: "I hate saying, 'I like exercising'. I want to punch people who say that in the face.

"But it's nice being in shape for a movie, because they basically do it all for you. It's like, 'Here's your trainer. This is what you can eat'.

"I don't diet. I do exercise! But I don't diet. You can't work when you're hungry, you know?"

The actress plays the lead role of Katniss Everdeen in the first installment of 'The Hunger Games' trilogy, and admits she is worried about the fame the role will undoubtedly bring.

She told Glamour magazine: "I feel like I got a ticket to go to another planet and I'm moving there and there's no turning back, and I don't know if I'm going to like that other planet or have friends there.

"It's daunting. The people who used to ignore me at parties, now they're nice to me and kissing my ass. But nobody's staked outside of my house.

"I wanted to make sure that when I said yes [to the role], I wouldn't regret it. And I don't regret it. I would have said no because I was scared, and then I would have been that bitter actress telling my grandkids, 'I'm the one that turned it down'."