we found only effects of at least a short term practice extended over a period of a few days to weeks of pranayama (alternate nostril breathing) rather than acute effects of unilateral right nostril breathing (suryanadi pranayama). Keeping this in mind the present study was designed to test the hypothesis that 10 min. of right nostril breathing have any immediate effect on ventilatory volumes and capacities in healthy volunteers. Methodology: Forced vital capacity (FVC), Forced expiratory volume in the first second (FEV1), Forced expiratory volume percent (FEV1/FVC%), Peak expiratory flow rate (PEFR), Forced expiratory flow25-75% (FEF25-75%), Maximum voluntary ventilation (MVV), Slow vital capacity (SVC), Expiratory reserve volume (ERV), Inspiratory reserve volume (IRV) and Tidal volume (TV) were recorded before and after Surya Nadi Pranayama. Results & Conclusion: There was a significant increase in FVC (p<0.0001), FEV1 (p<0.0007), PEFR (p<0.0001), FEF25-75% (p<0.0001), MVV (p<0.0001), SVC (p<0.0001), ERV (0.0006), IRV (p<0.0001) and TV (0.0055) after suryanadi pranayama. The immediate effect of suryanadi pranayama practice showed alleviation of ventilatory capacities and volumes. Any practice that increases PEFR and FEF25–75% is expected to retard the development of COPD’s. The increase in PEFR, vital capacities and flow rates by suryanadi pranayama practice obviously offers an increment in respiratory efficiency and it can be advocated to the patients of early bronchitis and as a preventive measure for COPD.