Versatile actor Vikram has done everything he can for his ambitious project 'I' which is releasing on January 14th. In a recent media interaction, Vikram said, "The moment I heard the story narrated by Shankar sir, I was like ready to do anything for this movie as its a life-time opportunity. To loose weight at a rapid pace, I have preferred a crash diet. Half an apple for 2 hours, small portions of egg and rice is all that I was allowed to eat. Post 10 PM in the night, I would go mad with hunger. That's My Most Difficult Phase".