Even at that. I doubt he was 215 pounds in the film no pain no gain”.
At 5'8.5", I think 213-lb is believable. I am the same height, and 212.6 was my heaviest weight, and while I was fat at that weight, I carried some decent size too. In a t-shirt, I wouldn't be radically different looking than Mark - given we are the same height, have the same wingspan, and were both fat/muscular at 213-lb.
It's not like he was in contest condition in Pain and Gain or anything.
The movie "No Pain No Gain" that you referenced is not a Wahlberg picture. It was an Ironage bodybuilding video that was discussed on the boards when it was released in 2005, starring Gus Malliarodakis and Dennis Newman:
