Jessica Biel Credits This Workout for Keeping Her Sane

"Beast mode" is the term Justin Timberlake used to describe wife Jessica Biel's insanely impressive pre-Emmys pistol squats. Standing on a box, the actress and first-time Emmy nominee bent down on one leg while the other remained straight, almost touching the floor, all while holding out weights in front of her. Beast mode, indeed. Without a behind-the-scenes look at Biel's aggressive approach to fitness, one look at her sculpted biceps and chiseled core confirms the long hours spent in a gym. But last night, at an event in Brooklyn, New York, to celebrate the launch of her new capsule collection with Gaiam, Biel says there's a more, let's say, user-friendly workout she always intersperses between days of circuit training: yoga.