Jumping rubber bands often can not only effectively enhance the functions of internal organs and blood circulation system, increase lung ventilation and promote metabolism, but also enhance the flexibility of legs and waist, promote the growth and development of pelvis, and develop physical qualities such as strength, flexibility and sensitivity, which is an effective means to improve jumping ability and balance ability. Therefore, in physical education class, rubber band jumping games are often played, and various jumping methods are made up in a targeted way, so as to improve students' interest and make students' physical quality develop in an all-round way.
With the improvement of our living standard, diet and quality of life, there are symptoms of overnutrition and obesity. In real life, we almost see that 10 people are