He said: "I didn't eat anything for a week before that scene. I just kept to very healthy food and nothing naughty at all. It was torture."
Despite his strict regime, the actor was still dissatisfied with the results when he saw the finished movie, reports Contactmusic. He added: "I've seen that part of the movie now and I suppose from the front it looks alright but from the side it's a different story."
Washington (ANI): For Robert Pattinson staying in shape is a 'torture', as he hates eating healthily. The Twilight Saga: New Moon actor had to go on a strict diet ahead of filming topless scenes for the movie, but he hated opting for healthier options when it came to food.