Pain & Gain is a 2013 American action comedy film directed by Michael Bay and written by Christopher Markus and Stephen McFeely, loosely based on a 1999 series of Miami New Times articles by Pete Collins about the activities of the Sun Gym gang, a group of bodybuilding ex-convicts convicted of kidnapping, extortion, torture, and murder in Miami in the mid-1990s. It stars Mark Wahlberg, Dwayne Johnson, and Anthony Mackie. The title is a play on the common fitness adage "no pain, no gain".

Michael Benjamin Bay is an American film director and producer. He is best known for making big-budget, high-concept action films characterized by fast cutting, stylistic cinematography and visuals, and extensive use of special effects, including frequent depictions of explosions. The films he has produced and directed, which include Armageddon (1998), Pearl Harbor (2001) and the Transformers film series (2007–present), have grossed over US$7.8 billion worldwide, making him one of the most commercially successful directors in history.