Having injured my back in a car accident, I had never been able to sit at a desk for any length of time without discomfort. Now I began to notice that whenever I leaned forward to read or write I displaced my head downward and allowed my chest to collapse so that my torso was a dead weight on my lower back. Since I had always done this, I assumed that there was no alternative except to make an effort to sit up straight. After experimenting with the Technique I discovered that if I inhibited the preliminary displacement of my head I could move forward without becoming heavy and could work at my desk without discomfort.
Frank Pierce Jones (“Freedom to Change” – Chapter 2 p11)