This time, it’s a book for boomers—that is, for people over 65. Over the past 30 years, Benita Cantieni—a body researcher and therapist, instructor, mentor, free thinker, self-taught expert, and entrepreneur—has written 27 books on the body. Nine of them are long-running bestsellers. “Aging is overrated. Just stay young,” she writes. And she steps into the ring herself. In the book, the 74-year-old provides exercise instructions not only in words but also in pictures. And she herself looks radiant and, above all, has remained very young.