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.
Sword swallowing Sword swallowing is a skill in which the performer passes a sword through the mouth and down the esophagus to the stomach. This feat is not swallowing in the traditional sense; the natural processes that constitute swallowing do not take place, but are repressed in order to keep the passage from the mouth to the stomach open for the sword. The practice is dangerous and there is risk of injury.