Involving children in physical exercise from an early age has a positive impact on the development of all motor skills and abilities. The degree of development of individual motor skills is more difficult to reach if the child is involved in physical exercise only after the age of 11. Therefore, early involvement of children in physical exercise is crucial, especially for their physical growth and development. The earlier a child is allowed to enter the world of sports, the more dexterous and agile he will be, i.e. he will have more developed coordination abilities and he will later more easily acquire more complex motor skills. A child who is involved in physical exercise from an early age will find a solution to perform any motor task more easily, even if he has not encountered it before. The research was conducted on a sample of 40 children aged 6 to 7 years. From the total sample, 20 children exercise, that is, they are involved in some kind of sports activity, and 20 children do not exercise, that is, they are not involved in any kind of sports activity. The goal of the paper was to check the level and possible differences in the ability of coordination and agility between children who exercise and children who do not exercise, and to determine whether there are any differences based on gender. The measurement of coordination and agility was carried out using these next tests: side steps, four-legged circle and backward polygon test. The children repeated all three tests three times. Children who exercise showed better results than children who do not exercise in all of the conducted tests. The boys performed better than girls in all of the mentioned tests, when comparing the boys who exercise to girls who exercise, and boys who do not exercise to girls who do not exercise. According to the obtained results and the results of other research mentioned in the paper, it can be concluded that physical exercise greatly affects the development of coordination and agility, that is, it has a positive impact on the improvement of all motor skills.