Hatha yoga
The Complete Illustrated Book of Yoga is a bestselling 1960 book by Swami Vishnudevananda, the founder of the Sivananda Yoga Vedanta Centres. It is an introduction to Hatha yoga, describing the "Yoga Sutras of Patanjali" and the "Hatha Yoga Pradipika". It contributed to the incorporation of Surya Namaskar (salute to the sun) into yoga as exercise.