Astanga Yoga is an ancient wisdom, the greatest and noblest gift that Sage Patanjali has offered mankind. Its wisdom is timeless and is as valid today as it was centuries ago. Its beauty lies in the application of its principles that can be adopted and adapted in discovering the finer aspects of man according to one's physical and intellectual capacity. The world-renowned Guru BKS Iyengar provides a lucid explanation on the exposition and application of the principles of Sage Patanjali in Light on Astanga Yoga. BKS Iyengar is considered as one of the foremost Guru on Yoga, who revived interest in the ancient subject and popularised it across the world. His writings are all based on his personal experiences. His book Light on Yoga written more than 50 years ago is often referred to as the Bible of Yoga. He is an author of over 30 books and most are best-sellers.