B.K.S. Iyengar was born in India in 1918 and has been teaching yoga since of the age of 17. He has been one of the world's leading teachers of yoga for over 70 years and is internationally recognized as an authority on Hatha yoga. His own style of teaching, "Iyengar Yoga," is taught by certified teachers across the globe. Iyengar was the first person to teach yoga to large groups of students. He lays great emphasis on precision and alignment, a style that is faithfully followed by his students. He is also the only person to teach the highest aspects of yoga—Atma Darshan—through asanas. Through his work, Iyengar has established the relevance of yoga to the treatment and cure of many illnesses. He received a doctorate from the United Nations Charter for Peace. In his 90s, Iyengar still practices yoga and travels the world teaching and lecturing.