Randeep Hooda: The actor's dedication for his role as prisoner Sarbjit Singh in the film Sarabjit was noteworthy. Randeep lost 18 kg in 28 days to look drastically thin. Directed by Omung Kumar, Sarabjit grabbed a lot of eyeballs for Randeep's performance, especially his transformation to look lean. Randeep, who loves to eat, had to go on a near-starvation diet. He was closely supervised by a doctor and his sister.

Rana Daggubati: Rana Daggubati is known for experimenting with his weight for his roles. His physical transformation into the fearsome Bhallaladeva for Baahubali: The Conclusion (2017) was lauded, which was a result of more than a year of rigorous workout and diet. The actor, later, for the Hindi-Telugu-Tamil trilingual franchise, Haathi Mere Saathi, shed almost 15 kg in over three months. He did so by abstaining from eating non-vegetarian food, stopping his weight training and only doing light cardio exercises to shed muscles.

Kangana Ranaut: Kangana Ranaut's upcoming film, Thalaivi, is based on the life and times of the beloved actress-turned-politician Jayalalithaa. To look the part of the legendary 'Amma', Kangy had to resort to taking hormone pills and put on weight. She informed mid-day, "That was needed so as to look voluptuous, especially around the belly and thighs. Since I am tall and skinny, and my face is angular, not round, I had to take mild doses of hormone pills to look different. Of course, I also started eating foods that promote weight gain."

Ayushmann Khurrana: Ayushmann Khurrana, whose film Bala deals with the issues faced by a young balding man, really went out of his way to look the part. In a recent interview with IANS, Ayushmann shared how he looked exactly like his grandfather after the prosthetic makeup was done. He said: "It was a different person altogether, and I did not recognise myself. I thought I looked like my grandfather because he had scanty hair. But I could relate with the reason why there is the complex (among people who are suffering from premature balding)."

Ranveer Singh: Ranveer Singh shed his muscles for Gully Boy, to fit into the role of a rapper. It was a big challenge for Ranveer to shed muscle for the film because he had significantly beefed up for his role of Alauddin Khilji in his previous film Padmaavat.

Rajkummar Rao: Rajkummar Rao was seen sporting a potbelly without using prosthetics. The actor had gained weight for his web series Bose. Rao had previously shed weight for another film Trapped, and later became fighting fit for his role in the film Behen Hogi Teri. Rao had also shared the three different pictures of his aforementioned looks on Instagram.

Aamir Khan: Mr Perfectionist of Bollywood, Aamir Khan is known to gain or lose weight as required according to his on-screen character. For the role of Mahavir Phogat in Dangal, Aamir ensured his weight fluctuated based on his character's looks, which was shown ageing at different time leaps in the film. The actor also had to manage his shooting schedule to facilitate the transformation. That's some hard work, and it paid off at the box-office.

Salman Khan: Salman Khan too gained some serious bodyweight for his role as a wrestler in Sultan. The actor was shown doing some heavy-duty grappling in certain scenes. Later, the actor went a step ahead for Ali Abbas Zafar's Bharat and got leaner for his role in the movie.

Varun Dhawan: Varun Dhawan went on a liquid diet for Badlapur, in which his character was shown as a 40-year-old man. He also loosened his toned muscular look for the role.

Hrithik Roshan: One look at Hrithik Roshan and there's no doubt that fitness is his middle name. Google Hrithik and you can see several images of him flaunting his incredible physique. But, for essaying the role of a paraplegic in Guzaarish, Hrithik Roshan freed himself from his strict workout regimen to look the part.

Abhishek Bachchan: Abhishek Bachchan gained weight for his film Guru, a biographical drama by Mani Ratnam. Abhishek did so to fit in the role of an aged business tycoon.

Bhumi Pednekar: Even Bollywood actresses are at the forefront when it comes to gaining or losing weight for a film role. Bhumi Pednekar gained 15 kgs for her debut film Dum Laga Ke Haisha, in which she starred opposite Ayushmann Khurrana. Bhumi dropped 20 kgs for Toilet: Ek Prem Katha, in which she shared the screen with Akshay Kumar.

Vidya Balan: Vidya Balan essayed a character inspired by the late Silk Smitha in The Dirty Picture. Vidya underwent weight gain for some scenes in the film's climax. The actress also won the National Film Award for Best Actress for The Dirty Picture.

Priyanka Chopra: Priyanka Chopra experimented with her weight for the 7 characters of various ages that she portrayed in 7 Khoon Maaf. As Priyanka's characters in the film changed with age, so did her weight.

Kangana Ranaut: Kangana Ranaut gained weight for the role of a married woman in Tanu Weds Manu Returns and lost kilos for the character of a Haryanvi athlete in the same film.