These celebrities are not only extremely talented but also very dedicated to their craft – they had to learn some crazy hard skills in order to accurately portray the roles they were cast in.

Continue through to learn who had to learn how to hold their breath for over seven minutes!

Natalie Portman spent eight hours a day in ballet training for her spectacular role in "Black Swan."

Photography: John Steven Fernandez - Wikimedia Commons

Bradley Cooper spent six months working with a dialect coach in order to achieve the perfect sound for his role in "A Star is Born."

Photography: Raph_PH - Wikimedia Commons

Tom Cruise is widely known for being the lead in the "Mission Impossible" series, but did you know he actually learned to fly a helicopter in 2018?

Photography: Dick Thomas Johnson - Wikimedia Commons

Danai Gurira completed intense sword training work for her character in The Walking Dead." She even helped choreograph some of the fight scenes.

Photography: AMC

Joseph Gordon-Levitt learned how to walk a tightrope for his role in "The Walk." He also picked up the unique skill of riding a unicycle.

Photography: Gage Skidmore - Wikimedia Commons

Jesse Eisenberg studied the fundamentals and theory behind magic in order to convincingly portray one of the best sleight-of-hand magicians in the film, "Now You See Me."

Photography: Gage Skidmore - Flickr

Kate Winslet learned to hold her breath for over seven minutes while preparing for her role in "Avatar 2."

Photography: Gordon Correll - Flickr

Margot Robbie trained her ice skating skills for 3 months in order to portray Olympic skater, Tonya Harding.

Photography: Eva Rinaldi - Wikimedia Commons