The Main Purpose of This Study Was to Compare Aerobic Capacity of Sports Men and Non-Sports Men. a Group of 25 Sports Men and 25 Non-Sports Men and Age Ranging Between 18 to 25 Years Were Selected from Jammu City. It Was Hypothesized That Sports Men Would Be Higher Aerobic Capacity Than the Non-Sports Men. the Between-Group Differences Were Assessed By Using an Independent Samples T-Test. Further Investigations Are Needed on the Above Studied Variables.