Dwayne Johnson's incredible physique is built on the philosophy that a core should be functional and strong. By shifting your ...

Benny Safdie set out to create "The Smashing Machine," and he made a decision that would define the film's authenticity.

From J.Lo’s no-rest training to The Rock’s 4 a.m. workouts, these six celebrities redefine what it means to stay fit. In this ...