Halle Berry Works Out in a Bikini on the Beach -- Watch!

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Looks like there's no question as to how Halle Berry maintains her killer physique!

The 49-year-old Oscar winner shared a glimpse of her bikini-on-the-beach workout routine via Instagram on Sunday, writing, "Being in London makes me miss my workout buddy."

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Sand planks seem to be the new secret for staying in shape.

Berry's amazing core was on full display last month at the MTV Movie Awards, when she wore a sheer dress that showed off her toned abs.

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Watch the video below.

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