Credit: Ramey Photo

After seeing this photo of 43-year-old Halle Berry rocking a bikini (from Anika Brazil Swim) on the beach with daughter Nahla, we had to know how she stays in such amazing shape. So we asked her trainer, Ramona Braganza (she helped Berry get her pre-pregnancy body back), who told us it's all about the squat thrust. Braganza, who also trains Jessica Biel and Jessica Alba, says the move is "an all-over fat-blasting exercise because it uses the large muscles of the legs, back and chest and raises your heart rate to keep your metabolism revved up." Find out how to do this move at home after the jump.

1. Stand with your feet shoulder-width apart, then bend knees and squat down. Put your hands on the ground on either side of feet.

2. Transfer your weight from your feet to your hands as you simultaneously jump back into a plank position.

3. Hold for a second, then jump back into a squat position and return to standing position. For added calorie burn, jump straight up to complete the exercise. Repeat 10 times.

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