不少人在日常生活中都有过这样的经历：如果早上要赶火车或有其他急事，有时不用上闹钟也会到点醒来。这是为什么呢？德国吕贝克大学的博思教授及其同事发现，人体内存在着不依赖生物钟的“闹钟”系统。人在睡觉前如果知道自己将要什么时候起床，这一“闹钟”会自动设定“闹响 Many people in their daily lives have had this experience: If you want to catch a train in the morning or have other urgent needs, and sometimes do not wake up on the alarm will be a bit awake. Why is this? Professor Borth and colleagues at the University of Lübeck in Germany found that there is an “alarm clock” system in the human body independent of the biological clock. Before you go to bed, if you know when you’re about to wake up, this “alarm clock” automatically sets "