The importance of proper nutrition and regular physical activity is being talked about more and more today. It has come a long way from the view that nutrition is only important for survival. Choosing the right nutrition from an early and preschool age for a child means healthier growth and development, better concentration, prevention for many diseases, more successful mastery of tasks and much more energy throughout the day. Such a diet is necessary for regular physical activity, which is just as important as proper nutrition. As awareness of the importance of proper nutrition and regular physical activity grows, so have new digital trends and they are increasingly replacing physical activity, but also negatively affecting a healthy diet. Habits, behaviors, customs that are learned in the early and preschool age accompany the child throughout life. Therefore, the creation of proper and healthy habits and lifestyles should be started from an early age with the aim of healthy growth and development and achieving better success. The first part of the paper presents a theoretical concept of the importance of proper nutrition and the creation of habits of proper nutrition from an early age and preschool age. In addition, the importance of physical activity of children of early and preschool age in various organized institutions or in the child's free time and the positive impact it has on early growth and development is stated. The second part of the thesis presents the results of research conducted with parents of children of early and preschool age. Parents of children filled out a survey with questions related to the level of physical activity and eating habits of children of early and preschool age considering place of residence. According to the results, it can be concluded that children from twelve different counties, regardless of whether they are living in the city or in the countryside or in coastal or continental Croatia, belong to the category of normally weight children.