The aim of this study is to determine which body mass index, body fat weight and body density of body analysis measurements affect the metabolic age of overweight and obese individuals before and after regular physical activity. Nineteen healthy sedentary overweight and obese male subjects aged 20-29 years participated in the study. Body composition measurements of the study group were made before starting the study and after the 12 weeks of regular exercise, the measurements were taken for the last time again. Before starting the study, the Body Mass Index (BMI) measurement ranges determined by the World Health Organization (WHO) were used to determine whether the individuals were overweight or obese. "Tanita MC 180 Segmented Body Analysis" was used to determine body density, body fat weight and metabolism age measurements. SPSS Package program was used for statistical analysis of the study measurements. T-test was used to determine pre-test and post-test values, and regression analysis was used to investigate the relationship between multiple independent variables and dependent variables. Significance values were taken as p<0.05.