Akshay Kumar, who plays a complex character in '2.0', has said that doing the action-thriller was like going to a school.  

Speaking in Hyderabad, where he was on Monday to promote the movie, Akshay said, "I studied in a school doing this movie and my principal was Shankar.  I have been an actor for 28 years and I never learned this much doing any other film.  The best part of being the film was to be punched by Rajini sir."

What was the scariest part about doing the movie?  "It was scary at times to sit down for 3.5 hours to put the make-up on.  I shot in Chennai and Delhi.  And the unit took every bit of care.  My costume was so thick and I had to be on a liquid diet.  I couldn't talk much.  I had to be quiet.  With the cooperation of the production team, I was comfortable," Akshay said.