Gwyneth Paltrow chews food properly to stay healthy

The 39-year-old, who has written her own cook book called 'My Father's Daughter...', sticks to a strict diet but part of it involves chewing a certain number of times.

"She sticks to a very strict macrobiotic diet which involves eating mainly grains and vegetables. She makes sure she chews every mouthful 13 times, at least. She also does organic juice detoxes. It sounds boring but she looks incredible. She works out five days a week and does Pilates," a source said.

Paltrow has previously said that she works hard to keep in shape and look good, and sleep is an important factor to her too.

"For me, sleep is a major thing. I don't always get it, and when I don't, I look like I've been hit by a truck. I had to work hard to get like this, but now I'm here it's so great because I don't have to think about it. I can just enjoy life. What a relief that is," she had said.