Butt Workout Move No. 7: Stability Ball Leg Curls
This stability ball exercise really engages your butt for a belfie-ready rear end.
Step 1: Lie on the floor with your lower legs on an exercise ball. Extend your arms out to your sides.
Step 2: Straighten your lower back, knees and hips, raising your back and hips off of the floor.
Step 3: Keeping your hips and lower back straight, lower your knees, pulling your heels toward your rear end. (Allow your feet to roll up onto ball.)
Step 4: Lower to your starting position by straightening your knees.