Jake Gyllenhaal isn't the type of guy to do anything half way—when he decides to do something, he's all in. Case in point: Rather than fake it, Gyllenhaal subjected himself to an intense twice-a-day workout regimen for his upcoming role as  Billy “The Great” Hope—reigning Junior Middleweight Boxing Champion of the World—in the upcoming film Southpaw.  "When I set my mind to something I just won’t stop until I do it,” says Gyllenhaal, in this never-before-seen training video.

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Gyllenhaal trained alongside Southpaw director Antoine Fuqua, sometimes as early as 4:30 a.m. That's dedication. Take a look at the video below to amp up your own gym motivation and check out Southpaw in theatres Friday, July 24th. (Need more inspiration? These simple strategies straight from sports psychologists can help.)

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