Nowadays, when our society is in the stage of rapid development, a tendency can be seen that a huge number of schools replace sports lessons with academic classes. It is agreed, that the main cause of this issue is the desire to make children more educated; however, due to the lack of physical activities children can suffer from physical as well as mental diseases. This essay,firstly,will discuss why some people strongly believe that this decision is beneficial,followed by an analysis of outcomes which can influence children's life and health.