The most important of all the nadis; the central channel, which extends from the base of the spine to the crown of the head. It is the pathway of the awakened kundalini.
the most important Nadi, which carries the pure vital energy (prana). The sushumna nadi (channel) is generally not working in man who has not balanced the energies of tamas and râjas which respectively flow through the Ida Nadi and Pingala Nadi
sushumna: a term that refers to the column of energy that extends from the base of the spine to the top of the head, that is part of the sutratma, and often referred to as the chakra column.