Farhan Akhtar left all of us surprised with his role in Bhaag Milkha Bhaag. Next, Farhan Akhtar will be seen playing an Anti Terrorist Squad cop in his next film 'Do' This character required him to be lean and at the same time muscular. The actor had gone through months of training to get the right kind of look. When it comes to gaining muscle mass it becomes very difficult.