This document discusses the role and characteristics of sport in the 21st century. It outlines how sport has become a major social phenomenon over the last 100 years due to its physical, mental, educational and social benefits. However, sport can also cause problems if misused. The document then examines the concepts of sport, how it is understood in society, and its presence in schools. It analyzes trends in Spain regarding sports participation and reasons for playing sports. Finally, it discusses the institutionalization of sport through organizations that regulate competitions and events.