Hatha yoga ancient yoga texts of Buddhism, Hinduism and Jainism, it is the Hatha yoga texts that provide step by step methodology on how to enter into an "asana". The Hindu text "Gheranda samhita", for example, in section 2.8 describes the "padmasana" for meditation. Most "asanas" are inspired by nature, such as a form of union with symmetric, harmonious flowing shapes of animals, birds or plants. Early hatha yoga was used to prevent the dripping of bindu (semen) from the heads of men. The two early hatha yoga techniques to achieve this were inverted poses such as Viparita Karani, known as 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