Many of the people who sought assistance from Alexander were performers. That's still true, since proficiency on a musical instrument or on a stage often forces the body into challenging positions that cause long-term pain. Practicianers of the Alexander Technique, aim at correcting posture and maximizing physical function. They help people reverse years of misuse, which may be compressing the spine or squeezing organs, causing dysfunction and pain. You're there when your back is long, your body is ready for movement and that achy, cramped feeling has disappeared.
Back pain is one of the most common maladies of modern life.
Good posture won't cure everything. But it can prompt improvements that ripple through the body. For women, especially, attaining good posture means defying at least two cultural ideals. The first has to do with the feet. But with feet held close balance is often impaired.