Mahavir Singh Phogat and his two daughters also appeared in Aamir Khan's show Satyamev Jayate. Director Nitesh Tiwari said that he was narrated a two line story by a friend at Disney (co producers of the film) which he really liked and developed it further. "Nitesh has written a wonderful story. The topic is very important, it's very dramatic. It highlights the discrimination that is meted out to the girl child in India. The best part is that he has done it in a very entertaining manner. The heart of the story is emotional, but it also has a lot of humour. Raju Hirani has this unique way to tell a story where he says something socially very relevant but he tells his story in a very entertaining manner. Similarly Nitesh has written a very entertaining lovely script, the dialogues are very entertaining. Each time I listen to the dialogues, I laugh a lot. I cry as well as laugh," Aamir Khan said.
Aamir stated that his normal weight is 68-70 kgs but for Dangal he gained almost 30 kgs. "Currently I am weighing 95 kgs. I shall be portraying the stage from 45 to 55 years. After that I will take a break of 5 months, get back to my usual weight of 68-70 kgs and get into the Dhoom 3 mode to play the younger version for which we will shoot for around 15 days. For being a wrestler, it's not about being fit. It is about explosive speed, a wrestler has to be like a cheetah," Aamir said. On being asked how challenging it is to undergo such drastic physical changes and if it affects his health, Aamir replied, "I am film motivated. I do whatever is needed for a film. In Ghajini I had to build a big physique, lose all muscle for 3 idiots, and for Dangal I have actually put on weight, I have actually become fat. The process of losing that will be a big challenge. Health does get affected. I have gained 30 kgs in six months and then I will lose weight in five months." Wife Kiran Rao said that she still doesn't know what the real look of Aamir is because the moment he's out of one character he gets into another one.
Aamir Khan also admitted that he would want to make a film on his great grand uncle Maulana Azad. "The reason why I want to make a film on him is that because he said a lot of things which are still very relevant today. He was a wonderful orator, beautiful thinker. There are a lot of aspects of his life from which we can still learn today," Aamir said.