John Friend (yogi) 19 he moved to Houston, Texas where he studied various styles of hatha yoga including Ananda Yoga, Sivananda Yoga, and Kundalini Yoga. He also began teaching yoga part-time while working as a financial analyst. In 1984, Friend began practicing the Ashtanga Vinyasa Yoga Primary Series and, in 1986, quit his analyst job to teach yoga full-time. In 1987, Friend graduated to Secondary Series while studying with Ashtanga founder K. Pattabhi Jois in California where he also studied with Iyengar Yoga teacher Judith Lasater. That same year, Friend attended an Iyengar Yoga convention in Boston, where he met B.K.S. Iyengar, after
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