The 29-year-old actor, who is sporting a much fit avatar in brother Rohit Dhawan-directed film, says he had to cut his fat and gain muscle.
"Training for #dishoom was one of the most fun and hardcore experiences. I had to cut gain muscle and cut fat at the same time I had an incredible trainer @rohanbodysculptor pushing me everyday will share this journey with you guys soon," he wrote on Instagram.
Also starring John Abraham, Jacqueline Fernandez and Akshaye Khanna, the film hits theatres on July 29.