(Pūraka): “Filling.” Inhalation, one of the phases of pranayama (conscious control and extension of breath). Puraka is mostly associated with the assimilation of prana (subtle energies). The Brihad Yogi Yajnavalkya Samhita (8:19) refers to the subtle effects of inhalation when defining it as that “restriction of the breath that fills all nadis (subtle channels).” This implies that for a yogi, inhalation is more than the intake of air. It is the attraction of prana (the universal life force) into the body.