In last few decades there have been an alarming trend was observed not only among young individuals but also in every persons regarding gym-practice as most used fitness media. Thus, the present study has been undertaken to evaluate whether regular gym going modulates physical and physiological fitness or not. The investigation was conducted in randomly selected male regular gym goers (mean age22.0) and non - gym - goer college students (mean age 21.3) of Kolkata. A significant difference (p< 0.05) in blood pressure, PFI, energy expenditure and MUAC was found in gym goers. But, in contrast, BMI, BF%, BSA, RHR, anaerobic power, VO2max and thigh and calf circumferences were found to be non - significant. Hence, this study infers a definite positive influence of regular gym going over physical fitness and muscle mass (strength) and also an influence over cardiovascular fitness.