In the modern way of life, where technology and a sedentary lifestyle prevail, spending quality free time is of great importance for the overall development and health of children. This paper, through previous research and selected literature, has further explained the importance of free time and the quality of spending it in a child's life. The paper points out the positive aspects of children's physical activity and the negative aspects of physical inactivity. Furthermore, it explains the importance of parents and the society as role models for children when choosing quality leisure activities. For this paper's purposes, the research "Preschool children involvement in extracurricular activities in the area of the city of Duga Resa" was conducted. The aim of the research was to determine how much preschool children are involved in extra-kindergarten activities in Duga Resa. Additionally, it explored what the views of parents are about the importance of engaging in extra-kindergarten activities. The research was conducted through a questionnaire and the respondents were parents of preschool children from Duga Resa. The results indicated that the majority of children are involved in extracurricular activities, mostly sports activities, and the children themselves expressed interest in these activities. Also, parents are aware of the importance of extracurricular activities and they understand their positive effect on the overall development and health of children.