From WENN.com

""I did a lot of kickboxing and some ju-jitsu but I forgot all the jiu-jitsu... I would learn a move that would, like, put you out in five seconds and then I would get home and I had already forgotten it... I couldn't retain the jiu-jitsu... but I could still hurt someone."" Actress Rooney Mara on the fighting tips she tried to pick up while training to play Lisbeth Salander in Hollywood's remake of The Girl With The Dragon Tattoo.