09/29/2008 at 01:00 AM EDT
• The Mission: Impossible III
actress, 32, races for her life with Shia LaBeouf
in the upcoming thriller Eagle Eye.
YOU SPEND A LOT OF THE FILM RUNNING AROUND!
I read the script and was thinking about the character and not all the action stuff. We started and I was like, "Wait, we're running again today?" It was constant sprints.
HOW DID YOUR BODY HOLD UP?
By the end, I was in the best shape of my life. Then I got pregnant and thought, "I'm not going to move a muscle now for the next nine [months]!" It's been awesome.
WILL YOU KEEP WORKING AFTER GIVING BIRTH?
I'm going to concentrate on being a mom. This baby is my boss, so we'll see.