Daniel Radcliffe — Jungle
Daniel Radcliffe played the lead actor in the film, Jungle. The film is based on a group of friends who get lost in the amazon rainforest, for this film he had to follow a very hard diet where did not eat anything for almost 2 days.

Shailene Woodley — Adrift
The almost shooting of the film Adrift was done at a sea which was 2 hours away from the shore. The shooting started at 4 in the morning and lasted for 12 hours and everybody except a director and a cameraman got seasickness.

Robert Pattinson — Good Time
In the film,Good Time Robert Pattinson played the character of a theif who was running away from cops and he had to forget about comfort, for almost 2 months he did not open his curtains and did not change his bedsheets and he ate the same food which is tuna, hot sauce and coffee during those days.

Charles Dance — Game of Thrones
Charles Dance playes the very popular role of Tywin Lannister in the world famous series, Game of Thrones. He learned a very unique skill for that series, he learnt to skin a deer for it.

Saoirse Ronan — Byzantium
Saoirse Ronan learned to play piano for her role in Byzantium. She had never learned to play any musical intrument before but just in 12 weeks she learnt it so well and she did a very good job.

Leonardo DiCaprio — The Revenant
Leonardo DiCaprio is one of the finest actors of Hollywood, despite of being a vegetarian he had to eat raw bison liver and also learned to speak few American languages for his film, The Revenant.

Tom Hiddleston — High-Rise
Tom Hiddleston had to see a real autopsy for his High-Rise and she also said that sometimes all the actors has to go through at extreme levels for their projects.

Jennifer Lawrence — Hunger Games
Jennifer Lawrence played the role of Katniss Everdeen in the film, Hunger Games. For doing the film she had to go through many obstacles like climbing tress and jumping and others.

Eddie Redmayne — The Theory of Everything
Eddie Redmayne played the role of a scientists in the film,The Theory of Everything. It took a lot for him to learn and understamd the man and play the role of a man who is not normal but he did it with patience and he also received oscar for it.