Ancient tantras and vedas were the first books of yoga. Sage Patanjali’s yoga sutras codified Yoga into eight fold path called as Astanga Yoga. In 6th century BC, Buddha’s brought in the ideals of Yoga like meditation, ethics and morality to the fore. Yogi Matsyendranath and his disciple, Gorakhnath wrote books on hath yoga in local dialect. Another outstanding book – Hatha Yoga Pradipika by Swami Swatmarama brings out further evolution of yoga techniques. In todays, 21st century, Yoga has been accepted to provide wellbeing not just on individual level but a tool to combat social malaise. Yoga therapy have being more relevant today as it balances the nervous and endocrine systems which directly harmonizes other body organs. Yoga’s most important achievement is that it works on holistic principles of harmony and unification.