Charlize Theron is known for undergoing physical transformations to immerse herself into character, and the star was so dedicated to putting on weight for her latest part, she set her alarm in the middle of the night to 'shove' food down her throat.
The actress revealed she put on close to three stone to play an exhausted mother-of-three in Tully, and that although she enjoyed eating cheeseburgers for breakfast at first, all the processed foods and sugar in her diet started to make her feel depressed.
'I gained close to 50 pounds for this film,' the star revealed to ET. 'I just 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.
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'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.'
Theron had about three months to gain the weight, and said it was hard to maintain which is why she would force-feed herself cold food in the middle of the night to keep it on.
'The first three weeks are always fun because you're just like a kid in a candy store. So it was fun to go and have breakfast at In-N-Out and have two milkshakes,' she continued.
'And then after three weeks, it's not fun anymore. Like, all of a sudden you're just done eating that amount and then it becomes a job. I remember having to set my alarm in the middle of the night in order to just maintain [the weight].'
The Mad Max star recalled: '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.'
Theron previously got candid about putting on weight for the part earlier this year, admitting that at one point she thought she was dying.
'It was brutal in every sense,' she told Variety. 'This time around, I really felt it in my health.
'The sugar put me in a massive depression. I was sick. I couldn't lose the weight. I called my doctor and I said, "I think I'm dying!" And he's like, "No, you're 41. Calm down"'.
We have no doubt the film - from Juno's Jason Reitman and Diablo Cody - will be well worth it...
Naomi Gordon is news writer mainly covering entertainment news with a focus on celebrity interviews and television.
