Stretching is the most popular fitness book in the world, having sold over 3¾ million copies in 40 years. It has been translated into 24 languages. In this new edition there are stretches for improving the bad posture attributable to cell phone usage ("tech neck”), and for people using computers.This is the book that people tell their friends about, that trainers suggest for virtually every sport and activity, and that medical professionals recommend to people just starting