* Eat a big breakfast: When she was growing up, Diaz says that her mother always encouraged her to eat a big breakfast to give her energy for the school day, and it's a habit that's stuck with her. But she doesn't reach for sweets.
Instead, she tries creative combinations like oatmeal mixed with sauteed zucchini. "I'm always looking for new ways to build flavour and have fun with my carbohydratess," she writes.
* Love the lemon: Diaz adds the citrus fruit to salads (in place of fatty dressing), pastas, and her water bottle. Lemons help digestion and are believed to boost immunity; they also contain lots of essential nutrients such as vitamin C, calcium and magnesium.
