Glute Bridge with Abduction

Lie on your back with your knees bent, feet flat on the floor.  
 
Raise your hips so your lower back is off the floor. Then, holding this bridge position, straighten your right leg and move it out to the side as far as possible. (Don’t let your hips drop.) 
 
Slowly bring the leg back in, lower your foot to its starting position, and slowly lower your hips to the floor. Repeat with your left leg.