Stability Ball Bridges:
Try practicing bridges on a stability ball, it’s challenging and a great hamstring and Glute exercise! Stephanie Watt is practicing it with her arms down by her sides, but you can make it harder by lifting your arms over head.
Start lying on your back, bend knees, press feet into stability ball, lift hips up to the ceiling, then back down towards the floor without resting. Try 2 sets of 15 Reps — with Stephanie Watt.