Hatha Yoga Pradipika formation of yoga. Jason Birch has investigated the evolution of the meaning of the Sanskrit word ""haṭha"." He specifically researched the key role of the "Hatha Yoga Pradīpikā" in popularizing a particular interpretation of this term. When written, the "Hatha Yoga Pradīpikā" drew from various classic texts on different systems of yoga, and Svātmārāma grouped what he had found under the generic term "haṭha yoga". Although haṭha yoga has evolved into a generic term that is currently understood as a branch of yoga involving physical poses (including sun salutations, vinyāsas, aṣṭāṅga, etc.), it originally had a more specific meaning. After
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