Jharrel Jerome says he skipped lunches on the set of the Anthony Robles wrestling biopic ‘Unstoppable’ in order to work out. The actor tells PEOPLE about transforming into the athlete, who worked his way to a NCAA championship in 2011 despite being born with only one leg.

Anthony Robles was a champion wrestler. Now Jennifer Lopez stars in his biopic. Robles breaks down fact vs. fiction in the sports drama "Unstoppable."

Unstoppable’ probes into the life and struggles of wrestler Anthony Robles, who was born with one leg. The biographical sports drama film highlights his struggles and challenges as he defies conventional thinking to turn his seeming disadvantage into a resilient spirit and mental fortitude that takes him to the national championship.