Oscar-winner Adrien Brody’s transformation into a muscleman in Predators came through tough preparation to live in a jungle by exercising everyday and giving up sex.

The Pianist star plays Buff Royce in the film. He says, “I studied a lot of military manuals, paramilitary books and isolated myself in the jungle. I was training and dieting six days a week.
Heavy weights and high-rep circuit training was the key along with hundreds of push-ups a day. I was eating the right things obsessively."
But why give up sex? He says with a straight face: “Look at fighters and people that are training for something that requires that level of intensity! I was doing everything in my power to harness ferocity and I felt that I need to keep away from all the distractions and all the things that drain you, if you know what I mean?