Bhastrika

Bhastrika, the bellows, takes its name directly from the blacksmith's bellows its rhythm is meant to evoke, and it is among the more physically vigorous of the classical pranayamas, driving both inhalation and exhalation forcefully rather than leaving inhalation passive as kapalabhati does, a full, active bellows action through the whole breath cycle rather than a series of sharp exhalations alone.

The Hatha Yoga Pradipika counts bhastrika among the principal pranayamas proper, crediting it with generating considerable internal heat and, in the classical text's own account, with helping to pierce or open the granthis, the psychic or energetic knots the hatha tradition holds obstruct the free rise of kundalini energy along the central channel, a claim situating bhastrika within the tradition's broader subtle body and kundalini oriented physiology rather than treating it as physical exercise alone. Classical practice generally has bhastrika followed by kumbhaka, breath retention, the pairing of forceful bellows breathing with a subsequent held breath a recurring structural pattern across several of the more advanced classical pranayamas, in which the retention phase is treated as carrying particular significance for the practice's deeper effects.

Bhastrika is generally taught as one of the more demanding of the widely known pranayamas, requiring a degree of prior breath control and physical conditioning that contemporary teachers typically expect students to have built through nadi shodhana and other gentler techniques first, a sequencing that broadly mirrors, if it does not always explicitly cite, the classical tradition's own sense of a graduated pranayama curriculum moving from milder purification toward more forceful, more transformative practice. Its energising and heat generating effects have made it a popular practice in contemporary yoga and wellness contexts specifically marketed for increased alertness and vitality, sometimes taught with comparatively little of the classical subtle body framework, kundalini and the granthis, that the Hatha Yoga Pradipika itself uses to explain the practice's deeper purpose, a simplification typical of how several classical hatha techniques have been adapted for a broader modern audience less versed in, or less interested in, the tradition's full cosmological framework. As with kapalabhati, contemporary teaching generally recommends bhastrika be learned under qualified instruction and approached cautiously by pregnant practitioners and those with certain cardiovascular or respiratory conditions, a caution consistent with the practice's classically recognised intensity.