Still fresh from The Machinist, it became necessary for Bale to bulk up to match the powerful physique of Batman. He was given a deadline of six months to do this. Bale recalled it as far from a simple accomplishment: “…when it actually came to building muscle, I was useless. I couldn’t do one push up the first day. All of the muscles were gone, so I had a real tough time rebuilding all of that.”  With the help of a personal trainer, Bale succeeded in meeting the deadline, gaining exactly one hundred pounds in six months. He then worked toward building muscle.