Bikram Yoga founded Bikram's Yoga College of India. He has also written books and sings. As of 2006, he had 1,650 yoga studios around the world. In 2012, there were 330 studios in the United States and 600 worldwide. A 2013 review of adverse effects from yoga found that Pranayama and Bikram were the most commonly cited styles, and found harm arising mostly in instructors who practiced intensely over a long period of time and who used advanced positions like handstands; in Bikram most of the adverse events arose from the heat and included low salt levels due to excessive water drinking
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