[1] Elizabeth De Michelis is a scholar of religion specialising in the history of modern yoga.[4] Elephant Journal notes that the well-researched book sets modern yoga in its cultural context, but that it "then leaps forward"[5] from Vivekananda at the end of the 19th century to Iyengar in the mid-20th.[1] Albertina Nugteren, reviewing the book in Aries, notes that it promises to provide a historical overview of the transformation of yoga when it crossed the cultural boundary from India to the West, but that "the story cannot be told in full, and [the] author has to make choices.In Nugteren's view, modern postural yoga, "so important in the context of contemporary society's stress on fitness and a perfect body",[6] differs in emphasis from traditional yoga "in India and elsewhere"[6] but "is not divorced from"[6] its spiritual and ethical values.[6] Lola Williamson, reviewing the book in Alternative Spirituality and Religion Review, calls it "a comprehensive overview" that traces modern yoga's foundations in 19th century esoteric systems from East and West and a mix of early 20th century ideas such as New thought, mesmerism, Neo-Vedanta and Raja Yoga, all the way to the globalisation of yoga.