It's about life in sports. Its connotation is: the birth of life lies in movement, and movement is the premise of the birth of life. Without material movement, there is no life; The existence of life lies in movement, and movement is also the foundation of life. Maintaining the existence of life is also inseparable from material movement; The development of life lies in exercise, which is the motive force and source of life development. It can be said that people can't live without exercise. Its extension is: the movement of life includes not only the movement of plants, animals and microorganisms, but also the movement of human life; For human life, it not only refers to mechanical movement, but also includes physical movement, chemical movement, social movement and thinking movement; It includes not only macroscopic human movement, but also microscopic cell movement, molecular movement and other forms of movement. So life lies in exercise.