Pelvic Tilting at windmills

Dr. Ashton prescribed several positions for me to perform each day. This position pictured on the left, is called Posterior Pelvic Tilt. The requirements sound simple enough: tighten your butt, lay down flat and squeeze your abdomen so that it moves towards your spine. This was a challenge. My back didn't want to elongate and I struggled to get my head to lower to the floor. As I flattened my stomach, the pressure released a little in my neck. By the 5th repetition out of 10, my lower back started to hurt. I was told to only do each position to the point of fatigue or pain, so I moved on to the next position. I never imagined that performing such a simple task might be so difficult.