Jennifer Aniston is famous for her physique, but the actress admits she doesn't diet to keep her body looking the way it does.

Aniston, 43, chatted with OK! Magazine about her fitness regime, and told the magazine she no longer diets after realizing that not only can fad diets be bad for you, but they aren't as effective as simply eating responsibly in the long term.

"I stopped dieting when I figured out that you just have to eat regularly and properly within moderation," Aniston said.

Aniston, who got engaged to boyfriend Justin Theroux this summer, added that she's also seen the negative effects fad diet regiments, like cleanses, can have on the body, and she doesn't want to put herself through that.

"The fads are too much," Aniston said. "The fasts - when you hear people saying, 'I'm going on a cleanse,' it's just so bad for your body."

So what does Aniston do to stay in shape? The actress is known for her yoga and pilates work and has praised those forms of exercise in the past, but she kept things simple with OK!, remarking that she thinks it's the little things that truly make a difference in a person's body.

"I think it's really about - honestly, this is going to sound so silly - going in the sun for 20 minutes a day is really important, vitamin D, because we are now having a vitamin D deficiency because of all the SPF," she said. "And I think being happy and smiling and laughing a lot."

Aniston also recently opened up about her famously relaxed yet chic style, offering the advice that comfort is the most important part of any look.

"Don't wear jeans that are so tight they make your tummy hurt. Don't wear heels that are so high you feel like you're going to fall over," Aniston said. "Sexy is about being at ease with your body."

Tags: Jennifer Aniston