 The "Yogakundali" and the "Yogatattva" are yoga texts related to the school of Hatha yoga and Mantra yoga.They are part of a tendency of syncretism combining the tradition of yoga with other schools of Hindu philosophy during the 15th and 16th centuries.The "Yoga-Kundalini" Upanishad consists of three short chapters; it begins by stating that Chitta (consciousness) is controlled by Prana, and it is controlled by moderate food, postures and "Shakti-Chala" (I.1-2).