The aim of the study was to compare the breath-holding capacities of asthma patients before and after 8 week yoga session to observe the yogic effects and benefits on such people suffering from mild to severe asthma. The study involved 60 participants of random age group. Breath holding time in seconds was noted before and after yogic intervention for the same group. Analysis was done through paired t test which showed t stats value more than t critical value giving a basis to reject null hypothesis thus saying that there is significant difference pre and post yoga. Yoga should be practiced on a regular basis for increased efficiency of lungs and a better functioning of body.