Hatha Yoga Pradipika In the twenty-first century, research on the history of yoga has led to a more developed understanding of hatha yoga. In analyzing the "Hatha Yoga Pradīpikā", as well as other works by Svātmārāma, researchers better understand the origins of hatha yoga. James Mallinson has thoroughly studied the origins of hatha yoga and has worked with classic yoga texts such as the "Khecarīvidyā". He has identified a collection of eight works that introduce early hatha yoga and contribute directly to its official formation in the "Hatha Yoga Pradipika". Many of his conclusions from these early works revise earlier understandings about the
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