The aim of research is determined that impact of urbanization on the physical activity related to the Brazilian youth. Brazil's population's surroundings and way of life have seen tremendous changes as a result of urbanisation, with young people's habits of physical activity being most affected. An overview of the main effects of urbanisation on young Brazilians' physical activity is given in this research. The built environment has changed due to rapid urbanisation, which has an impact on the availability of areas that are good for physical exercise. For measuring the research used SPSS software and generate informative result included correlation coefficient, model summary, regression analysis, also that chi square analysis between them. A more sedentary lifestyle is a result of shifting social and cultural standards, as well as an increased reliance on motorised transportation. Socioeconomic differences exacerbate health-related issues by affecting resources for physical exercise. Comprehensive approaches that include community involvement, public health programmes, and urban planning are required to solve these issues. Urbanisation can have a negative impact on Brazilian youth physical activity levels, but it can be lessened by prioritising the establishment of safe and accessible areas, encouraging active transportation, and putting inclusive policies into place. A comprehensive strategy is essential for the youth of Brazil's changing urban context to have a healthy and active future.