Lie on your back with your arms at your side 45 degrees away from your body and palms facing the ceiling. Bend your knees about 90 degrees and place your feet slightly wider than hip width apart. Finally, flex your glutes toward your knees.
Press your heels into the ground as you squeeze your glutes and hamstrings, raising your hips to the ceiling. Press your hips up until you form a straight line from your shoulders, hips, and knees.
Hold for a second at the top and then lower back to the ground.
Repeat for given reps.