Li Ming studies in a high school, and this is his second year. In order to get improved as soon as possible, he decided to study late every night. Usually, he would go to sleep about 11 o’clock, but the pressure made him couldn’t sleep well, so he kept study until 12 o’clock. A month passed, Li Ming realized that he didn’t make progress, instead, he lag behind. He talked to his teacher and the teacher told him that he needed to rest well and took it easy. Only the student slept well would he have the energy to study and focus on his attention. Li Ming did as the teacher said, indeed. It worked, he made progress and he could thought quickly. Sleeping well is the very important way to improve study efficiency. 李明是一名高中生，今年他高二了。爲了儘快得到提高，他決定每晚都學到很晚。通常情況下，他11點鐘就去睡覺了，但是，壓力使他睡不着，所以他一直學習到12點鐘。一個月過去了，李明意識到他沒有取得進步，相反，他落後了。他跟他的老師交流了下，老師告訴他，他需要休息好，放鬆點。只有休息得好，纔會有精力去學習，集中注意力。李明照老師說的去做了，事實上，確實奏效了，他取得了進步，思維轉得也快。睡眠好是提高學習效率非常重要的方法。
