The Bluestone-Simon method, developed by the author and her mother and taught by the former in her Connecticut studio, is one of those hybrids of Hatha Yoga and ""western corrective exercises"" which seems to owe an unacknowledged debt to Alexander technique. Despite one tantalizing reference to ""experiments in Russia. . . which scientifically prove Prana to be a primal force that permeates the universe,"" Simon is definitely not a heavyweight theorist. Nevertheless, her one-hour-a-day, fifteen-lesson program spells out in detail a basic combination that's worked well for many.