The 2013 film was a biopic on legendary athlete Milkha Singh, played by actor Farhan Akhtar on the big screen.
"What was gratifying that a lot of kids started watching it, lot of schools called us to arrange shows. We worked out a special plan for the schools in India where we could take kids to theatres for a no profit rate and it was kind of theatre to agree," Mehra said at FICCI FRAMES event here.
"The film connecting 6-12 year-olds was something that we had not dreamt about and when that happened it was wonderful. Kids have a knack of sensing things and it's amazing," he said.
Considering, there were too many things to add in the film, Mehra was clear what he wanted to focus on.
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Farhan too was present at the event and he too was happy with the appreciation coming his way.
Farhan underwent extensive physical training for the role and when he first stepped out in the avatar of Milkha Singh to shoot, everyone was stunned.
The topic of discussion at FICCI FRAMES was 'From Real-life Heroes to Reel-life Heroes: Biopics Inspiring Generations'.
Both Mehra and Farhan felt there are many great life stories or people on whom biopics should be made.