The article considers the issue of body composition of young men aged 18-19. The body composition was fractionated into fat component, muscle component, bone component, water content, basic metabolism, biological age. The studies were carried out using Tanita BC-545, a polysegmental body composition analysing device of the Japanese company. The purpose of the study was to establish correlation relationships of the body composition with the cardiovascular system indicators. The study involved 60 young men whose average age was 18.6 years, all of them are students of Bila Tserkva National Agrarian University. The obtained results of the summative experiment indicate the relevance of this study. We found high correlation between the main components of the body and the functional state of the cardiovascular system. The heart rate at rest (HRrest) index had an inverse correlation with the fat content (-0.529 at p <0.001) and the visceral fat content (-0.362 at p <0.01), biological age (-0.611 at p <0.001). The high correlation is observed between SBP and fat mass (0.279 at p <0.05), basic metabolism (0.514 at p <0.001), visceral fat (0.340 at p <0.01), bone mass (0.530 at p <0.001), muscle mass (0.539 at p <0.001), biological age (0.439 at p <0.001). The calculated systolic blood volume (SV) also has a high correlation with the fat mass (0.330 at p <0.01), with the basic metabolism (0.749 at p <0.001), the visceral fat (0.4001 at p <0.01), with bone mass (0.771 at p <0.001), with muscle mass (0.745 at p <0.001) and with the biological age (0.415 at p <0.01). The results of the study were taken into account when planning the process of physical education with the aim of correcting the motor regime, differentiating of the physical exertion and recommending nutrition.