Jennifer Aniston stays slim by avoiding junk food.

The 'Horrible Bosses' star insists she doesn't stick to a strict diet to maintain her stunning figure and just limits her intake of fatty meals.

She said: "I've never been a fanatic when it comes to what I eat. I've always discovered that I can stay fit by avoiding junk foods and eating healthily, while running or exercising regularly. I don't have any formula."

The 42-year-old actress' favourite exercise is yoga and she works out every day because she feels more energetic after working out.

She revealed to new! magazine: "I love to do yoga. I have more energy if I can do workout for 20 minutes every day. If I exercise enough I can eat what I want and not worry about my weight or how I look. If I put on a few pounds, I just eat more fish and salads for a week and exercise four or five times a week as opposed to two or three times. The important thing is to stick to a healthy routine. I feel better after a good workout and it gives you more energy for the entire day. I try not to worry or stress about things anymore ¬ I just like to get on with my life."