Alexander Technique is a physical movement discipline with a focus on self-perception of movement. It is most often taught by hands-on coaching and by convincing participants of the value of physical poise. What makes it unique is its lack of preset exercises; any movement can be used to demonstrate its principles. Historically taught in private lessons, its principles have also been adapted to be taught in groups, often using short individual lessons which, in turn, act as examples to the rest of the class. The Technique takes its name from F. Matthias Alexander, who first formulated its principles between 1890 and 1900. The Alexander Technique is claimed to alleviate pain, promote rehabilitation, improve breathing, and decrease stage fright, as well as improve other conditions related to overcompensation.
Frederick Matthias Alexander was a Shakespearean orator who developed problems which resulted in losing his voice. After doctors informed him there was no physical cause, he carefully observed himself in multiple mirrors. This revealed that he was needlessly stiffening his whole body in preparation to recite or speak. Further, Alexander observed that many individuals experiencing voice problems tightened the musculature of the upper torso, especially the neck, prior to phonation in anticipation of the act of voicing. He suggested that this pattern rotates the head backwards and downwards in relationship to the spine, disrupting efficient overall body alignment; later termed a "startle pattern." He attempted to change this reaction, using both direct and indirect means. After identifying substitution strategies and improving his ability to choose a new response, he found that the old pattern of voice loss not only ceased, but he continued to improve towards his original intention to become a better orator.
Later, Alexander came to believe that what he termed the empirical scientific method or self-observation and reasoning applied to one's own manner of moving, could be used to ease physical performance in general: sitting, standing, walking, using the hands and speaking. He recorded his methods by developing his "work" (termed Alexander Technique after his death,) so as to make experimentation and training repeatable, and also by recording his experiences in four books. He also trained educators of his Technique mainly while living in London from 1931 until his death in 1955, except for the wartime period between 1941 to 1943 which was spent teaching with his brother Albert Redden Alexander (1874–1947) in Massachusetts, USA.