● “I love competition,” says the former football player. “I thrive on it.” While filming the HBO miniseries Generation Kill, Lutz would challenge his co-stars to pushup and situp contests (he bulked up to 200 pounds of pure muscle during his seven-month stint in the African desert). For his role as a bulky, brooding bloodsucker in the Twilight flicks, Lutz endured six weeks of jiu-jitsu, kung fu, and boxing. This fall, he’ll be showing off his godlike physique as Poseidon in Immortals. Lutz relies on body-weight circuits, hiking, swimming, and eating small meals throughout the day to maintain his hard core.
TIM KENNEDY The Warrior, 31
● It would be hard to count the number of ways Tim Kennedy could destroy you. He’s a Green Beret, Army Ranger, sniper, and veteran of more than 200 firefights. He’s also a professional mixed martial artist with a 13-3 record in Strikeforce’s ultra-competitive 185-pound weight class. That’s a lot of badass hats for one man to wear. But the 31-year-old Kennedy wasn’t always so disciplined. Before the events of 9/11 inspired him to enlist, he characterized himself as a “selfish little prick” with trivial concerns. The Army changed all that and channeled Kennedy’s boundless energy. Based out of Austin, TX, Kennedy now trains three times a day, eats superclean, and stays ripped year-round. In the ring, that ferocity is something few opponents can match. After all, Kennedy doesn’t really train to fight. He trains because his life depends on it.