Hatha Yoga Pradipika gives the following variant titles, gleaned from different manuscript colophons: "Haṭhayogapradīpikā", "Haṭhapradīpikā", "Haṭhapradī", "Hath-Pradipika". The "Hatha Yoga Pradīpikā" was composed by Svātmārāma in the 15th century CE. as a compilation of the earlier hatha yoga texts. Svātmārāma incorporates older Sanskrit concepts into his popular synthesis. In the "Hatha Yoga Pradīpikā," Svātmārāma introduces his system as preparatory stage for physical purification that the body practices for higher meditation or yoga. It is based on asanas (postures) and pranayama (breathing techniques). "Hatha Yoga Pradīpikā" lists thirty-five earlier Haṭha Yoga masters (Skt. siddha), including Ādi Nātha, Matsyendranātha and Gorakṣanātha. The work consists of
Ashtanga vinyasa yoga classes in similar style, offering posture variations, and teaching Ashtanga in a much less linear style, with a greater emphasis on alignment and breathing. Sharath's "new generation" of young students have adopted Sharath's new rules, and teach in a linear style without variations. According to the Sharath generation, variations are not allowed, and practice must be in a strict Mysore environment under the guidance of a Sharath-approved teacher. How-to videos & workshops, detailed alignment instructions, and strength-building exercises are not part of the method, neither for the practitioner or the teacher. These types of instruction are not approved by Sharath,