1. Lie faceup with your arms at your sides, your knees bent, and your heels on the ground.
2. Lift your hips off the ground until your knees, hips, and shoulders are in a straight line.
3. Hold for 1 to 2 seconds, and then return to the starting position.
4. Continue for the remainder of the set.
Be sure to: Fire (squeeze) your glutes to lift your hips off the ground.
You should feel it: Working your glutes, and to a lesser degree your hamstrings and lower back.