How Jennifer Aniston Let Herself 'Fall Apart Physically' for New Movie The actress opens up about letting herself go for role.

 -- Jennifer Aniston may be one of the most glamorous actresses in Hollywood, but the former "Friends" star went method for her latest movie, "Cake," in which she plays a woman dealing with chronic pain, and she looks completely different in photos from the set.

To prepare for "Cake," Aniston, 45, spoke to friends dealing with physical conditions, as well as doctors, she told reporters after the film's premiere in Toronto.

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The normally super fit Aniston let her body go for the role.

“There was not a lot of home time,” Aniston said, according to Vanity Fair. “So I was pretty much going home, going to sleep. ... I didn’t do anything physically. ... I pretty much let myself fall apart physically and that was really important for me.”

She added that it was liberating to go makeup-free.

"We don’t always have our hair and makeup on," she said of ditching to mascara for the role. "And this character is basically someone who had just given up, just on even waking up, sometimes.”