'Pain & Gain' preview: Mark Wahlberg 'believes in fitness' in Michael Bay's latest

Michael Bay's latest movie, "Pain & Gain," has strippers, fast cars and Mark Wahlberg looking super-ripped with no shirt -- and that's just from the film's trailer.

"My name is Daniel Lugo, and I believe in fitness," Wahlberg's character says in a voice over as he and his bulging biceps run away from the cops.

In the flick, out April 26, 2013, Wahlberg plays a fitness buff who kidnaps a corrupt business man (Tony Shalhoub) to extort money from him. Lugo enlists the help of a couple of other super-buff dudes, played by Anthony Mackie and Dwayne "The Rock" Johnson, in the based-on-a-true-story movie.

Check out the preview below.