"One should eat everything especially healthy and not junk food. I don't like the idea of starving. I would eat and burn it out in gym. The amount of intake is what matters," she said.
Kareena, who was size zero five years back, begins her day with a banana milk shake followed by a cup of coffee.
"I don't know where this term of size zero came from, people called it that way (size zero). I became thin for Tashan. And that is because of Rujuta, I followed her instructions," she said.
The 32-year-old actress is a part of a nutrition documentary DVD film Indian Food Wisdom and The Art of Eating Right, by famous celebrity nutritionist Rujuta Diwekar.
Kareena reveals that she is a vegetarian. Her husband actor Saif Ali Khan, who is also part of this DVD, likes to eat meat but rarely.
"Nawabi food is rich in meat so I opt for dal or paneer while Saif eats mutton. I don't eat meat," she adds.
Kareena feels older actresses like Madhubala and others were beautiful because they ate simple food.