Start lying on your mat, knees bent, feet flat. Engage your core, and float your left knee to tabletop position, then your right. Keep your knees in line with your hips.
Interlace your hands behind your head, elbows out to the sides. Exhale and draw your ribs down toward your hips, and lift your head off your mat.
Inhale as you extend through your left leg and point through your toes. Then exhale, engage your core, and draw your left leg back to tabletop position. Repeat with your right leg.
If your neck is holding too much of the tension, lower your head onto the mat and continue the movement with your neck down and arms by your sides on the mat. You will still work your abs just as much without having the tension in your neck taking over.
Repeat for 50 seconds, then hold Child's Pose for 10 seconds.