人的神经系统活动分“兴奋”和“抑制”两种形式，这两种过程无时不在进行着相互联系、相互转化和有规律性的运动。如果长时间地学习，大脑始终处于兴奋状态，这种单调、持久的刺激对学生的身心健康是很不利的，势必会出现疲劳、注意力不集中等现象，使大脑进入抑制状态。为了 Human nervous system activity points “excited” and “suppressed” in two forms, both of which are always in contact with each other, mutual transformation and regular exercise. If you study for a long time, the brain is always in the state of excitement. This monotonous and lasting stimulus is very detrimental to the students’ physical and mental health. It is bound to appear tired, inattentive and so on, making the brain into a state of depression. in order to