Actor Sam Claflin stars as Will Traynor in the upcoming film “Me Before You.” Although it is essentially a romantic story, Claflin revealed the physical challenges he had to overcome in the course of production.

The storyline has Claflin confined to a wheelchair for the most part of the movie. His role as the paraplegic Will Traynor is reliant upon his caregiver Louisa Clark played by Emilia Clarke, TV3 reported.

The movie required him to keep still and make as little movement as possible. Hence, Claflin considered his role in “Me Before You” as more difficult than his portrayal of Finnick Odair in the “Hunger Games.” The publication cited excerpts of his interview with Total Film magazine.

“I think this was the most physically challenging thing I have ever done in my entire life. You have to understand, to not move, to sit in a certain position, to keep my hands (still) … I was using muscles that I’d never used before. Of course, I can never fully understand what it is to live like that,” Claflin revealed.

Despite the physical challenges of his character, Sam Claflin revealed a close similarity between his personality and Traynor’s. He identified mostly with his character’s determination and passion although he also acknowledged his dark side, Film-News wrote.

“I think there was a great deal of me in Will. Of course, Will has a very dark side to his personality but everyone has a darkness, and pushed to a certain point, you will meet that darkness. However, all it takes is one person to take you back into the light, and I think that’s exactly what happens with Will. I genuinely think his determination and passion is something I share,” Claflin said.

Likewise, his co-star Emilia Clarke shared her affinity to her role of Louisa in “Me Before You.” Clarke, who portrays Daenerys on “Game of Thrones,” admitted that Louisa bears a quirky similarity to her real life persona. Claflin and Clarke are also on the cover of the paperback version of Jojo Moyes’ best-seller, “Me Before You,” Entertainment Weekly reported. The copies hit bookstores last April.

Click here to watch the best and saddest moments from the book as revealed by the extended trailer. “Me Before You” premieres on June 3.