A bridge using a BOSU ball helps strengthen your glutes and buttocks. It can also improve your overall coordination, balance, strength and stability. If you feel your up, stretch out the back of your thighs and your hip flexors.
Step 1. Lie on your back with your feet flat on top of the BOSU and legs hip width apart.
Step 2. Squeeze your glutes to slowly lift your bottom up off the floor.
Step 3. Continue to lift up as high as you can and hold.