One of the major contemporary challenges is the global pandemic of obesity and unhealthy lifestyles, which encompasses the lack of physical activity, overconsumption of unhealthy food, and smoking. Sedentary habits and overlooking the importance of physical well-being increases the risk of an array of diseases, including cardiovascular diseases, respiratory ailments, cancer, and diabetes. Cardiovascular diseases represent a leading cause of mortality worldwide; high blood pressure, as a frequent phenomenon among the population, might lead to serious complications if not controlled and treated adequately. On the other hand, regular physical activity has a beneficial effect on the heart cycle and blood pressure. Furthermore, it reduces the risk of cardiovascular diseases and diabetes, and also improves lung function and life quality. The main objective of this research is to examine the effect of physical activity on lowering blood pressure within the context of obesity. The data used in this research was acquired through measurements conducted in the hall of the Faculty of Health Studies in Rijeka. The measurement sessions, organised in a form of circuit training sessions, took place at the beginning and the end of the cycle that consisted of 48 regular training sessions. The sample consists of 17 individuals, including 10 females and 7 males with a body mass index greater than 29.9 kg/m^2, which according to nutritional status categorises them as obese. The statistical analysis was carried out using a Spearman's correlation coefficient. The results showed that physical activity, which in this particular situation took the form of 48 training sessions over a period of 24 weeks, reduces blood pressure values of obese people.