It is known that some students have too much homework， and as a consequence of this they don't get enough sleep during the night， then the next day they don't have enough energy to focus during Also， students don't have enough free time for social activites such as visiting the sports clubs， as a result， most of them can feel a lack of motivation when it comes to revision and completing homeworks， as well as becoming more and more 目前很多学生都有大量的作业，因此他们晚上睡不够，然后下一天没有足够的精力在课堂上集中精神还有，学生们没有足够的自由时间去参加社交活动，例如参见运动社团，因此他们在复习和做作业时会感到没有动力，还有变得越来越宅
