Forms of alternative spirituality such as Alexander technique, Buddhist groups, Islamic Sufism, herbalism, reiki, and yoga are also thriving.

To suggest that the technique, based as it is on physiological reality and empirical observations, is some type of spirituality suggests to me that the author needs either a dictionary or at least one lesson in the technique from a certified teacher.

I would have preferred had the author called the Alexander Technique an alternative to spirituality.