Steph Hammerman was born with cerebral palsy and doctors believed she would never walk, talk, read or write.
But the 29-year-old from North Carolina, who has also fought off cancer, has become the world’s first CrossFit trainer with the condition.
Cerebral palsy is the name for a group of lifelong conditions that affect movement and co-ordination.
Video produced by Daniel South
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source: bbc.com