PAGE UNDER CONSTRUCTION : Patanjali International Yoga Foundation (PIYF) Rishikesh India - Registered Yoga School (RYS) 100, 200, 300, 500 was established in 2001 as Yoga Ashram & Retreat Centre Rishikesh - yoga health and training school, to hold activities and research on ancient yoga, following its deepest source - the noble sage Patanjali. Providing knowledge from the original textbooks of yoga, ayurveda and indian cultural scriptures.