The actor plays a troubled alcoholic policeman in the thriller.
He told the Hindustan Times: "While preparing for the role and shooting, I began to like drinking a lot. It took a lot of willpower to not depend on the juice.
"I can understand how tough it can be for a person to quit drinking. I experienced it firsthand for a short span of time. It can be devastating to crave a drink all the time.
"Homework about your character's background and experiences, even though it might not be shown in the film, helps you portray the character effectively. It is also fun to be someone else."
He went on: "As an actor, my biggest joy is to experience diverse mindsets and personalities. It is a high for me personally, but it's not recommended or necessary for a role. I am an actor who 'lives' a variety of roles. I enjoy the process and do it for my sake, as much as for the film."
Hooda is to play an assassin in his next project John Day.
The star replaced Arunoday Singh in Heroine, after lead actress Kareena Kapoor reportedly refused to do intimate scenes with Singh.