Mass leisure refers to the increase in free time available to the general public, particularly in the late 19th and early 20th centuries, as a result of industrialization and urbanization. This phenomenon led to the rise of entertainment industries, cultural activities, and organized sports, which became accessible to a broader segment of society. The development of mass leisure was a significant aspect of the societal changes brought about by the Second Industrial Revolution, as it transformed how people spent their free time and engaged with each other.