Great Glutes...

#2...
Lie on your back with your knees bent, feet planted hip distance apart and your arms resting by your sides. Lift your hips, engaging your glutes, off the floor as high as you can coming up to a shoulder bridge. Hold for a count of 3-5 and lower. Repeat for 12-18 repetitions.

*Increase the difficulty by doing this with a weight plate or other weighted item on your abdomen.