In chronic obstructive pulmonary disease (COPD) and mild asthma, Ujjayi and Nadi Shodhana improved FEV1 (forced expiratory volume) and decreased rescue inhaler use by 43% in a 2024 study. The mechanism involves increased negative intrapleural pressure and collateral ventilation.
Prana travels through subtle channels called nadis . The Shiva Samhita claims 350,000 nadis, with three being paramount: Ida (left, lunar, associated with the parasympathetic nervous system and mental energy), Pingala (right, solar, associated with the sympathetic nervous system and vital energy), and Sushumna (central, dormant until prana is purified). The goal of pranayama is to force prana into Sushumna, leading to kundalini awakening. Along the Sushumna lie chakras (energy vortices), each influenced by specific breathing patterns. 3. The Physiology of Conscious Breathing Modern science provides a compelling corollary to yogic philosophy. Pranayama directly manipulates the autonomic nervous system (ANS). pranayama the breath of yoga
Pranayama techniques involving breath retention ( kumbhaka ) challenge chemoreceptors (sensitive to CO2) and baroreceptors (sensitive to blood pressure), leading to increased tolerance to stress, enhanced oxygenation efficiency, and neuroplasticity in the brainstem. 4. Classical Techniques of Pranayama The Hatha Yoga Pradipika describes eight kumbhakas , but four form the core of traditional practice. In chronic obstructive pulmonary disease (COPD) and mild
fMRI studies on Kumbhaka show increased functional connectivity between the insula (interoceptive awareness), prefrontal cortex (executive control), and periaqueductal gray (pain/breath integration). For generalized anxiety disorder (GAD), 12 weeks of Nadi Shodhana (30 min/day) was non-inferior to SSRIs in a 2025 pilot trial, without side effects. The Shiva Samhita claims 350,000 nadis, with three
Pranayama: The Breath of Yoga – A Comprehensive Exploration of Theory, Practice, and Modern Science
A 2023 meta-analysis in the Journal of Clinical Medicine reviewed 42 RCTs on slow pranayama. Findings: significant reduction in systolic BP (−8.2 mmHg), heart rate (−6.4 bpm), and salivary cortisol. Bhramari (humming bee breath) was most effective for hypertension due to nitric oxide release in the nasal sinuses.
Patanjali’s Yoga Sutras (II.49–II.53) state that once pranayama is mastered, "the veil is removed from the inner light." The logic is sequential: Unsteady breath → unsteady mind → sensory distraction. By voluntarily controlling breath, one gains control over mental fluctuations ( citta vritti ). Pranayama serves as the bridge between the external (asana) and internal (pratyahara, dharana, dhyana).
