Modified Cobra Target: Abdominals Lie facedown on the floor with thumbs directly under shoulders, legs extended with the tops of your feet on the floor. Tighten your pelvic floor, and tuck hips downward as you squeeze your glutes. Press shoulders down and away from ears. Push through your thumbs and index fingers as you raise your chest toward the wall in front of you. Relax and repeat. Do 5 reps total.