F. Matthias Alexander developed an ability that avoided what negative bodily issue?
F. Matthias Alexander Frederick Matthias Alexander (20 January 1869 – 10 October 1955) was an Australian actor who developed the Alexander Technique, an educational process applied to recognize and overcome reactive, habitual limitations in movement and thinking.
Alex Comfort Alexander Comfort (10 February 1920 – 26 March 2000) was a British scientist and physician known best for his nonfiction sex manual, "The Joy of Sex" (1972). He was an author of both fiction and nonfiction, as well as a gerontologist, anarchist, pacifist, and conscientious objector.