少儿是我国社会群体的重要组成部分,他们决定着国家的未来。他主要是指7周岁到14周岁的少年儿童(也可称少儿),正处于人生阶段身心发展较为迅速的时期,发育速度开始突增,但其身体心理年龄特征与青年、成人时期有着很大的区别,比如少儿的心肺功能不够强大,很难承受大幅度的运动负荷;神经系统发育也还不够完善,对身体各部分的调节控制能力较弱;神经系统的兴奋过程占比较明显优势,如活泼好动、注意力比较难集中等, Children are an important part of our social groups and they determine the future of our country. He mainly refers to children aged 7-14 (also called children), is in a period of rapid development of physical and mental life stage, the rapid growth of the beginning, but the physical and mental age characteristics of youth and adults have a great Of the difference, such as children’s cardiopulmonary function is not strong enough, it is difficult to withstand a substantial exercise load; nervous system development is not perfect enough, the body’s ability to regulate and control weak; nervous system excitations accounted for more obvious advantages, such as Lively, attentive more difficult to concentrate on,