Jagadish "Jaggi" Vasudev, widely known as Sadhguru, is an Indian guru and founder of the Isha Foundation, based in Coimbatore, India. The foundation, established in 1992, operates an ashram and yoga centre that carries out educational and spiritual activities. Sadhguru has been teaching yoga since 1982. He is the author of the New York Times bestsellers Inner Engineering: A Yogi's Guide to Joy and Karma: A Yogi's Guide to Crafting Your Destiny, and a frequent speaker at international forums.