Urdhva Vrikshasana performed with the hands apart, as the pressure exerted by the arms is outward. This technique can be especially helpful for raised arm inversions. In some styles of yoga leaning backward may be considered a variation of Ūrdhva Vṛkṣāsana and be substituted for it in Surya Namaskara vinyasas. In Surya Namaskar, Ūrdhva Vṛkṣāsana is an important part of many styles of yoga, particularly Ashtanga Yoga, and is the first vinyasa of the series (following the starting asana, samasthitih). In Ashtanga Vinyasa Yoga, Ūrdhva Vṛkṣāsana appears as part of full vinyasas throughout the practice. In Vinyasa Krama Yoga, Tāḍāsana is performed
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