Bikram Yoga are encouraged to develop their teaching skills the longer they teach. This results in varying deliveries and distinct teaching styles. Bikram Choudhury, founder of the Bikram Yoga system, is also the founder of the Yoga College of India. Born in Calcutta in 1944, Choudhury began practicing yoga at age four. He stated that he practiced yoga 4–6 hours every day. At the age of thirteen, he asserts that he won the National India Yoga Championship and was undefeated for the following three years and retired as the undisputed All-India National Yoga Champion. Choudhury later devised the 26 postures sequence and
Ashtanga vinyasa yoga six series are: Earlier practitioners of the style report that originally there were four series on the Ashtanga syllabus: Primary, Intermediate, Advanced A, and Advanced B. A fifth series of sorts was the "Rishi series", which Guruji said could be done once a practitioner had "mastered" these four. According to Sharath Jois, one must master poses before being given permission to attempt any others that follow. However, Manju Jois disagrees. According to Manju's accounts of his father's instruction, Pattabhi Jois also occasionally allowed students to practice in a non linear format. Many of Pattahbhi Jois' students now teach their Mysore