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Keira McManus was named one of the fittest teenagers in the world after winning a third CrossFit world championship. (Anita Maric via SWNS)

By Adam Dutton

Meet the world's fittest girl - a 16-year-old record-breaking British teenager who can lift almost twice her own body weight.

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(Anita Maric via SWNS)

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(Anita Maric via SWNS)

Originally published on talker.news, part of the BLOX Digital Content Exchange.

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