Kapalabhati

Kapalabhati, shining skull, is the rapid, forceful exhalation practice of hatha yoga, performed as a repeated series of short, sharp exhalations driven from the abdomen, with inhalation left passive and largely automatic between each forced exhale, producing the bellows like rhythm that gives the practice its family resemblance to bhastrika even though the two are classed somewhat differently within the classical literature.

The Hatha Yoga Pradipika notably classes kapalabhati among the shatkarmas, the six cleansing or purificatory techniques of hatha yoga, rather than treating it purely as one of the pranayamas proper, a classification that reflects the tradition's own view of the practice as primarily a cleansing technique for the respiratory passages and sinuses, clearing the skull's air passages as the name suggests, with its breath regulating and energising effects treated as a valuable secondary benefit rather than the practice's primary classical purpose. This dual classification, purification technique with pranayama like qualities, is part of why kapalabhati sits at a slightly different conceptual position within classical hatha yoga than nadi shodhana, ujjayi and the other techniques more straightforwardly grouped as pranayama proper.

Contemporary yoga teachers generally introduce kapalabhati as an energising, heat generating practice, suited to morning practice or as preparation for more demanding physical or meditative work, in contrast to the calming register more commonly associated with nadi shodhana, and this energising, activating quality is consistent with the practice's traditional classification alongside other vigorous shatkarma cleansing techniques rather than among the gentler, more overtly meditative pranayamas.

Because the technique involves sustained, forceful abdominal contraction and rapid breathing, contemporary teaching, echoing cautions already present in classical hatha texts about several of the shatkarmas, generally advises against kapalabhati for pregnant practitioners and for those with certain cardiovascular, respiratory or abdominal conditions, and recommends it be learned initially under qualified instruction rather than attempted purely from written description, a caution the atlas notes as widely and consistently given rather than as this entry's own medical advice. Kapalabhati is commonly taught in combination with bhastrika and the other named pranayamas as part of a structured practice sequence, and it belongs, along with them, to the broader Pranayama discipline of the yoga tradition.