The book योगश्चित्तवृत्तिनिरोधः, "Yogah Chitta Vritti Nirodhah” is definition of Yoga by Great Sage Patanjali in his Yoga Sutras. The authors have tried to get the best out of all ancient scriptures which mentions about Yoga in various forms; HathaYoga, Patanjali Yoga Sutras, Shrimad Bhagavad Gita and other related scripts. The book is the compilations of the Sanskrit scriptures and also covers most of the content as required as part of syllabus for Yoga Certification Boards exams for Level 1,2 and 3. The book has also tried to explain it's related aspects; Diet, Ayurveda, Teachings etc., and the benefits by which we will not only calm our mind but will be able to control its behavior.