The term "yoga" in the Western world often denotes a modern form of Hatha yoga and a posture-based physical fitness, stress-relief and relaxation technique,[23] consisting largely of asanas;[24] this differs from traditional yoga, which focuses on meditation and release from worldly attachments.[23][25] It was introduced by gurus from India after the success of Swami Vivekananda's adaptation of yoga without asanas in the late 19th and early 20th centuries.[26] Vivekananda introduced the Yoga Sutras to the West, and they became prominent after the 20th-century success of hatha yoga.[27]