This is a great exercise for the glutes (buttocks) and outer hip.
Instructions
Lie on your side with the loop around your lower legs, just above the ankles. Your hips and shoulders should be stacked vertically. You may place one hand in front of your body for balance.
Keeping your pelvis stable, exhale and lift the top leg, pushing your foot up toward the ceiling. Keep the other leg anchored to the floor. Slowly lower the leg back to the start position. Repeat 8-12 times, then switch legs.