Action hero Arnold Schwarzenegger is as competitive off screen as he is on, according to his PREDATOR co-star Carl Weathers. Weathers, 59, - who shot to fame as boxing champ Apollo Creed in Rocky - tells how muscle-bound Schwarzenegger encouraged the cast of 1987 horror movie Predator to compete in "ego"-driven iron-pumping competitions between takes. He tells MTV.com, "Arnold (Schwarzenegger) and I had a competitive thing going on. He took his whole gym down there, enough weights to kill a giant. All of a sudden guys were getting up at 6 and 4 in the morning, trying to be the first one in there and get the biggest pump. It was just ego, ego, ego. We were getting up in the middle of the night to work out! It was like having a bunch of adolescent boys at day camp."