The main contents of the series of teaching materials of college physical education elective courses are introduced: sports and fitness: dear students, congratulations on your finally entering the university after more than ten years of hard work. You've lost a lot today. At this moment, I suddenly found that my body is the one that needs to make up lessons most. Due to lack of exercise. The body that should be strong becomes weak; Due to lack of exercise, you often feel overwhelmed. This kind of teaching material can only be used as an audience in the sports field. Just want to make your body strong. Let you taste the joy of exercise, the excitement of competition and the pleasure of cooperation in sports, and let you experience setbacks and courage, failure and success, struggle and victory! {zzjj}