Kundalini is a concentrated form of prana or life force, lying dormant in chakras in the body. It is conceptualized as a coiled up serpent (literally, 'kundalini' in Sanskrit is 'That which is coiled.' Sanskrit kund, "to burn"; kunda, "to coil or to spiral"). The serpent is considered to be female, coiled up three and a half times, with its mouth engulfing the base of the Sushumna nadi.