If there is one person who knows how to run on camera, and make it look like he's actually going insanely fast, it's Tom Cruise! Seriously, you think about him too when someone mentions running in a movie! Don't deny it! LOLz!
Anyway, Jessica Chastain was having a problem in her new movie called The Debt, because she had bad form when trying to sprint on camera! So what happened? Sam Worthington (her co-star) stepped in and told her to Tom Cruise it up a little bit!
Here's what she said: