In this contribution are presented results of testing 569 Czech adult people (273 males and 296 females) older than 18 years. There are discussed results in BMI, which was measured by machine Inbody 720. By questionnaire were learned parameters of sport practicing, magnitude of settlement, life status and education level. Presented results show negative trends. BMI parameter increases when the age arises: most of male groups and two oldest female groups are of overweight. Majority of adult Czech population does not practice any sport activity (71%). This of course influences BMI parameter, when those individuals, who do not practice sport mainly among male groups have again overweight and obesity. Magnitude of settlement also slightly determine watched parameter: in male groups is BMI level decreased with greatness magnitude of settlement, while in female groups can be seen opposite trends. Those who are single or possess good education level have better results in watched BMI parameter.The project "Creating a research team for the purpose of determining the level of physical activity (inactivity) in selected age groups of the population of men and women in the Czech Republic" (CZ.1.07/2.3.00/20.0044) is financed by the European Social Fund and the state budget of the Czech Republic