You can read an excellent article by Ms Cranz on the
Journal of Bodywork and Movement Therapies at
http://www.harcourt-international.com/jo... (The article must be downloaded - click on "sample article" under the Alexander Technique heading.)
The Ergonomics.org website at
http://ergonomics.org explores the relationship between the science of ergonomics and the benefits of Alexander Technique training.
The Campaign for Better Seating Website at http://www.betterseating.org/ has a lot of good information about chairs and chair design.