How to Get Jacked Like A Superhero

From Men's Fitness

How He Did It: 
To put on muscle fast for Thor—and subsequently Huntsman and Avengers—Hemsworth, who says he'd never lifted before becoming an actor, adopted a weight-training routine based on the principle of muscleconfusion. The actor constantly varied the amount of weight, number of reps and the speed of his lifting so his muscles never adjusted to workouts. Hemsworth reportedly worked with many of Thor's tools—think sledgehammers and kettlebells—to become the massive guy he is now, and the intensity of his workouts required a near-constant intake of calories including protein from lean meats and complex carbohydrates like fruits and vegetables high in fiber, which promotes cardiovascular health, and antioxidants that aid in muscle recovery.