Mark Wahlberg stepped out on the balcony of his Miami hotel for some air yesterday. He walked out in just boxer briefs and later emerged wearing workout shorts. Mark's buff body is the result of hard work rather than steroid-like enhancements to help him get into character for Pain and Gain, which he's been filming since last month. He's been showing skin in front of the cameras, but has also taken advantage of downtime to display his rock solid abs and arms. Mark went shirtless to swim with his family during their visit to Florida in April. Mark's wife Rhea Durham wore a bikini for the sunny outing and splashed in the ocean with their four kids Ella, Michael, Brendan, and Grace.