“This is going to be huge — and my legs are going to be amazing!” she said in an interview with People recently. “Florence Griffith Joyner was an amazing human being and the more I’m learning about her, the more I’m like ‘Wow!’”

Haddish has already lost 50 pounds over the past year and is enjoying the process. According to Deadline, the biopic “tells the story of the Olympian’s remarkable life and untimely death, showcasing her historic feats, but also her enduring impact on the entire world of sports and in the communities that needed her help and inspiration the most.”

Read more at Shadow and Act: Tiffany Haddish is getting into Olympic shape for this biopic