Lie faceup on the floor, knees bent and in line with hips, calves parallel to floor, feet together. Rest unclasped fingertips behind head, elbows pointing out to the sides. Contract abs, pulling your navel in toward your spine [A].

Maintain leg position as you use abs to pull ribs in toward hips, lifting head, neck, then shoulder blades off the floor [B]. Slowly lower to starting position; do reps. Begin with 8–12 reps; gradually build to 16–20 reps. Targets rectus abdominis and obliques.