Hip Swings Hold your final bridge at the top. Keeping your knees and rib cage still, lift your right hip higher than your left. "Swing" your tailbone down toward the floor as your switch sides and lift your left hip higher. Alternate sides and repeat for 20 reps on each side. Be mindful to keep your rib cage and knees still — only your pelvis is moving. "We're still working the glutes, hamstrings, and deep abs, but now you're also hitting the side booty and obliques," Jetter explains.