Kellan Lutz works hard to get that Hercules 'pop'

The skinny guy doesn't get cast as Hercules. Conversely, you can't just go down to the Gold's Gym in Venice Beach and hire some muscle head to play the lead in a big-budget 3-D movie. Acting chops to go with the bulging biceps and rippling midsection are required.

http://www.latimes.com/health/la-he-five-questions-lutz-20140104,0,723282.story