K. Pattabhi Jois 'Authorized Level 2' teachers are able to teach up to where they learned in intermediate series. Certified teachers have learned the third series and beyond and are able to teach accordingly. His first trip to the West was in 1974 to South America, to deliver a lecture in Sanskrit at an international yoga conference. In 1975 he stayed for four months in Encinitas, California, marking the beginning of Ashtanga Vinyasa Yoga in the US. He had said on many occasions that only twenty or thirty students practiced Ashtanga Yoga in America then, but, 'gradually, gradually, in twenty years, it will
Ashtanga vinyasa yoga asana practice, but also stated that the breathing should be deep breathing with sound. He reiterated this notion in a conference in 2013 stating, "You do normal breath, inhalation and exhalation with sound. Ujjayi breath is a type of prāṇāyāma. This is just normal breath with free flow". In 2014 published on YouTube, Manju Jois dodged the question, "What is the difference between Ujjayi breathing and free breathing?" by saying that "the breathing in Ashtanga should be long and deep with the sound like the ocean". He also states that if you don't make sound, that is okay, too. However