Mumbai: Kangana Ranaut, who will be seen doing a lot of action in 'Krrish 3', says etching out the role was physically taxing. "It was difficult because it was physically challenging for me. The action was a bit unreal. It was very raw and a normal human being can't do it," Kangana told us. "Our action director had come from China and the fight sequences were very difficult. Overall, I had to learn a lot for the film. I feel my experience with 'Krrish 3' was physically challenging," she added. A sci-fi thriller, 'Krrish 3' will take forward the story of a superhero, played by Hrithik Roshan, while Kangana is the superwoman in it. "I always wanted to play a superwoman and I was happy to do this. This is one of my best performances. I only hope everybody praises our hard work," said the 26-year-old. Directed by Rakesh Roshan, 'Krrish 3' also features Priyanka Chopra and Vivek Oberoi among others. It is slated ...