Actor Abhishek Bachchan is all set to mesmerize the audience with his upcoming thriller film 'Bob Biswas'. His character in the film is going to be a far cry from what Bollywood typically portrays and thus it was a tough task for Abhishek to get into the shoes of Bob Biswas, a psychologically disturbed assassin. While preparing for the role, apart from getting into Bob's mindset, the major challange faced by Abhishek was to get into the required body shape.

During a recent conversation with India Today, Abhishek talked about his physical prep for the part and shared why he didn't opt for fatsuit and prosthetics. He said, "Yes, that (prosthetics) is something that Sujoy and Diya (Annapurna Ghosh) wanted to explore first. I was dead against it. We did try it on, I like to give everybody a fair opportunity. I said I will try it. I wasn’t happy with it because of the lack of movement. When you put a prosthetic stomach, it is very inanimate. And you look fake somewhere. I believe today the audience wants to see an actor being completely authentic with the material that they have."

He added, "I became between 100-105 kilos during the shoot. And if you see Bob’s face, the face changes when it is round and his cheeks fill up. When you do prosthetics on the cheeks, it looks like a prosthetic. The stomach also moves in a different way. When you have that weight and you are physically carrying that weight, your entire performance changes because your body language changes your weight, your movement, your walk, your run, everything changes you know."