"Pranayama is control of Breath". "Prana" is Breath or vital energy in the body. On subtle levels Prana represents the energy responsible for life or life force, and "Ayama" means control. So Pranayama is "Control of Breath"1. In today’s era of industrialization due to air pollution, sedentary lifestyles respiratory strength of individual is affected. So in our society there is increase in demand for special Technique which will look after respiratory health. Pranayama a part of Yoga has ability to improve respiratory function. FVC, PEFR etc. are parameters which indicate functional ability of respiratory system. The study is conducted to evaluate whether Pranayama plays any role in improving lung capacity.