He used these words to describe a relationship of the head, neck and back in which the neck became progressively freer, the head tended to go forward in relation to the neck and up, and the back tended to lengthen and widen. When this relationship or pattern is working, all parts of the body involved in use and movement work cooperatively together and to the best advantage. Such right use in the ordinary activities of everyday life had a dramatically powerful effect on functioning, posture, bodily contours, and alignment.
Lulie Westfeldt (“F. Matthias Alexander, The Man and His Work” – Chapter 1 p10)