Ever since Mark Wahlberg showed up on the music scene under the alter ego Marky Mark, his fans have been gawking at his flawless physique -- not to mention his Oscar nominated acting chops and '90s rap skills. It's hard to believe that the Pain and Gain actor turns 41 today, June 5, as his body is as on point as it was when he posed for Calvin Klein in the early 1990s.

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