These are not moral codes. These are a few directions that help shape our lives as the way we want if from others. Yamas are the bridge between you and others. Niyamas are between you and your body. These are to lead a life of peace, prosperity and internal growth as enumerated by Maharsi Patanjali in the Patanjala Yoga Sutras.
Shri O.P. Tiwari was initiated in the field of Yoga by his Guru Swami Kuvalayananda. He was amongst the first few students of Swamiji to have completed his Yoga Pravishtha in the Year 1957. Since then he has been selflessly devoted to the cause of Yoga.