Earlier, in an interview with BBC Asia, Kartik talked about preparing for ‘Chandu Champion’, and wrote, “There’s a lot of weight transformation you’ll see throughout the film, so there will be a gap of like 2 months for me to again bulk up. And Kabir (Khan) sir is super—the way he’s shooting it and the way he’s looking into the other details. We were shooting at the Olympian Centre in London, and it was really hectic because I had a 102 fever and had to go in the water, which was cold. Every day, I would just take 3-4 pills before going into the water, then again, my viral would come back, then again it would subside, and then come back because I performed water scenes.”