An exercise scientist reveals how to get six-pack abs

Shawn Arent, the director of the Center for Health and Human Performance at Rutgers University and a Fellow in the American College of Sports Medicine, explains what you'll really need to show off those six-pack abs. Produced by Kevin Reilly. Additional camera by Grace Raver and Will Wei. Special thanks to Michael Bultman and CrossFit NYC. Follow TI: On Facebook