The actress said her 'The Debt' co-star Sam Worthington gave her some pointers about how to run in an action movie, reported Contactmusic.
"Sam Worthington, who I acted with in 'The Debt', had to teach me (how to run), because I used to look like such a wimp when I tried. He told me to think of Tom Cruise when he runs in movies - that's what I was aiming for," she said.
Chastain, 36, also praised another co-star, Brad Pitt, with whom she starred in 'The Tree of Life', for being an inspiration to her career.