Charlize Theron gained nearly 50 pounds for her role in Trully, and according to her all it took was a few trips to McDonalds.

“I wanted to feel what this woman felt, and I think that was a way for me to get closer to her and get into that mindset,” she told Entertainment Tonight. “You know, it was a huge surprise to me. I got hit in the face pretty hard with depression. Yeah, for the first time in my life I was eating so much processed foods and I drank way too much sugar. I was not that fun to be around on this film.”

“Like, all of a sudden you’re just done eating that amount and then it becomes a job,” she said after confessing to eating In-N-Out for breakfast. “I remember having to set my alarm in the middle of the night in order to just maintain [the weight].”

She added, “I would literally wake up at two in the morning and I’d have a cup of cold macaroni and cheese just next to me. I would wake up and I would just eat it … I would just, like, shove it in my throat. It’s hard to maintain that weight.”