The Scottish actor pumped up to perfection as a Spartan warrior in 300 (2007). Butler spent four months intensely training to build a fighter's chiseled bod. The actor's trainer created the "300-rep Spartan workout." It goes like this: Without resting between exercises, Butler performed 25 pull-ups, 50 dead-lifts with 135 pounds, 50 push-ups, 50 jumps on a 24-inch box, 50 floor-wipers, 50 single-arm clean-and-presses using a 36-pound kettle bell, and 25 more pull-ups.
After filming wrapped, an exhausted Butler stopped working out for eight months. He eventually returned to the gym for a more sane four-day-a-week workout schedule.
Credit: Sebastian Willnow/dapd