London: Actress Natalie Portman says she had an exhausting regime during the shooting of `Black Swan` when she hardly had time to eat.
"It was more difficult than anything I`ve ever experienced before. I like to go home and be myself but with this one I didn`t get the chance. It didn`t leave me." A website quoted Portman as saying.
"I was barely eating, I was working 16 hours a day. I was almost method acting without intending to. I do wonder now how people can do this kind of role when they have a family," she added.
The 29-year-old actress Portman lost 9 kg for the role, spent up to eight hours a day in dance rehearsals, and had even dislocated a rib during the shoot.