"The 6-foot, 3-inch actor added about 20 pounds of muscle to play Thor. And, he says now, it wasn’t all the right muscle.
“I’d be fit and strong standing there doing a bicep curl, but then I’d be told to run and jump and roll and do a fight scene, and my body would sort of freak out. I’d have injuries or pain in places that I shouldn’t,” Hemsworth recalls.
His Thor workouts have evolved in the years since, during which he’s played the character eight times. “For the last one, I lifted a lot of heavy weights but also incorporated a lot of functional movements,” he says. “I’m much leaner in Men in Black. I did a lot of boxing for that, a lot of functional training around mobility, like bear crawls, air squats, lunges, sit-throughs, sprints, and kettlebells.”"