The study aimed to compare Study of Selected Physiological and Psychological Variables among Vegetarian and Non-Vegetarian Runners. A total of Fourty (40) subjects were 20 vegetarian and 20 non- vegetarian runners Belongs To university of Patanajali (UK) which were randomly selected for the study. The Subjects were selected by using purposive sampling. The age of the subjects ranged between 18-28 years. To analyze the vegetarian and non- vegetarian runners of male groups i.e. Physiological Variables and Psychological Variables runners. The analysis of data was done by using statistical technique ‘t’- test for finding the insignificance difference of variables exhale capacity, fat %, and aggression among vegetarian and non vegetarian, and the level of significance was set at 0.05 levels (p<0.05). From the statistical analysis of the collected data, it is concluded that there is found insignificant difference in the variables exhale capacity, fat %, and aggression among vegetarian and non vegetarian, hence the hypothesis which is given by the researcher is rejected.