Asana creating "a marriage of hatha yoga, wrestling exercises, and modern Western gymnastic movement, and unlike anything seen before in the yoga tradition." Krishnamachara is described as "the father of modern yoga", and had among his pupils men who became influential yoga teachers themselves: the Russian Eugenie V. Peterson, known as Indra Devi; Pattabhi Jois, who founded Ashtanga Vinyasa Yoga in 1948; B.K.S. Iyengar, his brother-in-law, who founded Iyengar Yoga; T.K.V. Desikachar, his son, who continued his Viniyoga tradition; Srivatsa Ramaswami; and A. G. Mohan, co-founder of Svastha Yoga & Ayurveda. Together they revived the popularity of yoga and brought it
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,