Shailene Woodley Ate Only 350 Calories a Day and Drank to 'Pass the F--k Out' for Movie Role

Woodley opened up about how she had to lose weight to portray real-life survivor Tami Oldham Ashcraft in upcoming film “Adrift” during an interview with The Times.

The dieting regime called for minimal food intake and skipping dinner. "I can't sleep when I'm hungry, so I would have a glass of wine to basically pass the f--kout.”

"Adrift" is based on a true story about Tami Oldham Ashcraft and her fiance Richard Sharp ― played by Sam Claflin ― who struggled for survival on the Pacific Ocean. The sailors crossed paths with Hurricane Raymond and were lost at sea.

"For the last two weeks I had a can of salmon, some steamed broccoli and two egg yolks everyday — 350 calories. It was f--ing miserable," Woodley said also adding she and Claflin both said they could not have overcame their hunger without the support from one another.

Tami and Sharp, her fiancé, were caught in the middle of the Hurricane, battling 60-100 foot waves, lost for 41 days, fighting for survival off of sardines and spam while traveling 700 miles to get to the closest land, Hawaii.

"Adrift" is currently in theaters. The film is based off Tami's memoir "Red Sky in Mourning: A True Story of Love, Loss, and Survival."