A source close to the actor said: 'He has been sweating it out in the gym to get a chiselled physique for his next. The actor has been undertaking rigorous workouts each day to achieve the bulky look.'
Sidharth is reportedly also going through intense training sessions for the movie which will see him playing a baddie. 'The Villain' is directed by Mohit Suri and also features Shraddha Kapoor of 'Aashiqui 2' fame.
Sidharth, a model-turned-actor made his Bollywood debut with Karan Johar's 'Student Of The Year'. He recently wrapped up shooting for the filmmaker's new production 'Hasee Toh Phasee'.