National fitness refers to the ability of all people, regardless of gender, age and age, to enhance strength, flexibility, endurance, coordination and control of all parts of the body.

Sports leisure is a kind of free, voluntary and pleasant activity that people carry out in their leisure time. As a physical activity to develop people's "self-nature", sports play an irreplaceable personal and social function in leisure and entertainment.

The main difference between sports leisure and national fitness is that sports leisure is voluntary exercise, while national fitness is collective exercise.