Mark Wahlberg: Shirtless In Miami

Mark Wahlberg goes shirtless while walking around his South Beach hotel balcony on Sunday (April 1) in Miami Beach, Fla.

The 40-year-old actor showed off his muscles, listened to some tunes on his headphones, and waved to fans and photographers below.

PHOTOS: Check out the latest pics of Mark Wahlberg

Mark is in town filming the new Michael Bay flick, Pain and Gain.

He’ll also be busy producing a new reality show for A&E tentatively titled Teamsters.

The show will “provide a first-hand glimpse of the legendary union in the most aggressive and territorial city in America: Boston. Here, the Teamsters Local 25 battle for the rights of their 11,000 members,” according to Deadline.