In the Mirror (2020)

A CrossFit trainer becomes the father of a baby girl, Snow White. Snow White's mother dies, and her father marries a young woman obsessed with CrossFit and herself. She works out all the time in order to be the best. And she really is the best - she can do 50 burpees. In the meantime, little Snow White plays and grows up in the CrossFit gym. Time passes, and one day it turns out - while the Stepmother can do 50 burpees, Snow White can already do 53 burpees.