Hatha yoga physical essence of life that was constantly dripping down from the head and being lost. These techniques sought to either physically reverse this process (by inverted postures like the "viparītakaraṇī") or to use the breath to force bindu upwards through the central channel. Other texts like the "Vivekamārtaṇḍa", "Goraksaśataka", and "Khecarīvidyā" also teach the raising of kuṇḍalinī. The aims of these practices were siddhis (supranormal powers such as levitation) and mukti (liberation). The only other texts older than the Hathapradīpikā to teach Hatha Yoga ̣mudrās are the "Shiva Samhita", "Yogabīja", "Amaraughaprabodha", and "Śārṅgadharapaddhati". The "Hatha Yoga Pradīpika" is one of
Karma karma theories is the concept of reincarnation or the cycle of rebirths ("saṃsāra"). Rebirth is a fundamental concept of Hinduism, Buddhism, Jainism and Sikhism. The concept has been intensely debated in ancient literature of India; with different schools of Indian religions considering the relevance of rebirth as either essential, or secondary, or unnecessary fiction. Karma is a basic concept, rebirth is a derivative concept, so suggests Creel; Karma is a fact, asserts Yamunacharya, while reincarnation is a hypothesis; in contrast, Hiriyanna suggests rebirth is a necessary corollary of karma. Rebirth, or "saṃsāra", is the concept that all life forms go