Sadhguru, born Jagadish Vasudev, is an Indian spiritual leader and the founder of the Isha Foundation. He began teaching yoga in 1982 and established the foundation in 1992 in Coimbatore, India. The Isha Foundation runs an ashram and yoga center, offering educational and spiritual programs to people from various backgrounds. Sadhguru has written several books, including Inner Engineering: A Yogi's Guide to Joy and Karma: A Yogi's Guide to Crafting Your Destiny, both of which have appeared on the New York Times bestseller list. He is also known for speaking at international events, where he addresses topics related to spirituality, well-being, and personal growth.