What He Did: The actor gained 30 pounds of muscle in just three months.
Why He Did It: Norton needed to look intimidating for his role as a white supremacist in 1998’s American History X.
What He Ate: Norton pounded protein all day long, squeezing in five total meals supplemented with protein shakes.
His Workout: The routine Norton followed included compound lifts such as squats and presses done without rest between sets. The non-stop activity caused him to burn more calories during the workout and induce a greater level of exhaustion in his muscles that resulted in greater growth.
Plus: It’s rumored that Arnold Schwarzenegger was so impressed by the speed of Norton’s muscle gains that he called the actor to ask if he had used steroids.
Norton says: “I knew this guy was going to have to be really physically fearsome and defined by rage...arming himself against his own emotional pain, and this body he’s created is the physical manifestation of that.”