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Mark Wahlberg

Though he's a father of four, Mark Wahlberg still finds time to hit the gym! The actor put on 40 pounds of muscle for his role in the upcoming flick "Pain & Gain," and was snapped showing off his beefy bod in Miami.

The Boys of Summer

Hugh Jackman, Joe Manganiello, Chris Hemsworth, and other hot stars show off their buff bods.