Who

Halle Berry

Harley Pasternak, who has worked with Berry, 45, says uphill walking is the best cardio exercise. It's easy on your knees while tightening your butt, thighs and lower legs."

If you want to lose weight and look camera-ready like Halle, you can have carbs two times a week," suggests her trainer Nat Bardonnet. "Up your cardio sessions and eat five times a day while avoiding sugar, flour, lactose, cheese, dough, rice and pasta."

Photo by Gilbert Carrasquillo/FilmMagic Jan 27, 2012