Jake Gyllenhaal Talks Dramatic Weight Loss for Nightcrawler: "I Was Totally Unaware of How I Looked"

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"So by the time we started shooting I was totally unaware of how I looked, really," he said. "I was just completely zeroed in on the scenes at hand and the movie at hand. We only had 26 days to shoot it…so we were just going."

This isn't the first time Gyllenhaal has addressed his shrinking appearance for the forthcoming flick. He previously told E! News that his mom was concerned when he became skin and bones. "I'd say my mother was worried," he admitted. "I would say she just wanted me to be careful. But she also knew and knows how seriously I take what I do and she respects that.

"She knows that I'm a big boy and I could handle myself and that I would stay within the realm of being safe, but yes, she worried," he continued. "She'd be like, 'You're cranky—eat something.'"

Watch the clip to hear more about Gyllenhaal's experience filming the movie! hits theaters on Oct. 31.

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