The Role of Mass Health Sports in the Effective Organization of Leisure and Formation of an Active Lifestyle of Youth Summary The topic that we have chosen for research is one of the most pressing problems of our time. The level of spiritual development of our society represents an urgent task to strengthen the highest and purest moral principles and norms in the consciousness and behavior of adolescents. One of the most important tasks of parents, teachers and coaches is effectively organize the lifestyle and free time of teenagers, and not instill in them bad habits. A more important issue is the formation of an active lifestyle in adolescents by organizing their free time in ways that interest them. As a result of a survey conducted among teenagers, it turned out that sports rank first as one of the main means of effectively organizing free time. Key words: teenager, free time, active lifestyle, sports, mass recreational sports, volitional and spiritual qualities