Hatha yoga but it is the mainstay of Hatha yoga. Mudras and certain kundalini-related ideas are included in Hatha yoga, but not mentioned in the Yoga Sutras of Patanjali. Patanjali yoga considers "asanas" important but dwells less on various "asanas" than the Hatha yoga texts. In contrast, the Hatha yoga texts consider meditation as important but dwell less on meditation methodology than Patanjali yoga. The Hatha yoga texts acknowledge and refer to Patanjali yoga, attesting to the latter's antiquity. However, this acknowledgment is essentially only in passing, as they offer no serious commentary or exposition of Patanjali's system. This suggests that Hatha
Ashtanga vinyasa yoga and never taught by Sharath. However most of his teachers who claim to have been taught by him will teach the above methods, exercises, & postures, even though none of what they teach is part of the Ashtanga method of instruction under Sharath. Pattabhi Jois also did not require students to independently drop back and come up from back bending before progressing to the 2nd series. Sharath changed the requirements, and has now made this mandatory. However, it is important to note that Pattabhi Jois was the founder of the system, and taught each of his original students differently, instructing