What lengths are you willing to go for some serious gains? The stars of the new film Pain & Gain seemed to have no limit to how far they would go to get what they wanted–and neither did the characters they portrayed. Mark Wahlberg gained an eye-popping 40 pounds to play Daniel Lugo, a bodybuilder who teams up with his friend Adrian Doorbal (Anthony Mackie) and ex-con Paul Doyle (Dwayne Johnson) to start a kidnapping and extortion ring. 

We caught up with the stars at the New York City premiere to talk about what it took for them to play these roles and the best fitness wisdom they had to offer.

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