睡眠是一个系统工程其实,睡觉并不是倒在枕头上,盖上被子合眼一宿,再睁开眼睛醒来这么简单,它是一个复杂的渐变过程。为什么我们有时醒来后,身体会神奇般地恢复力量,而有时却感觉比睡觉之前还累呢?这便是是睡眠的深度和状态所不同而导致的。芝加哥大学的研究人员,在对几千名志愿者进行过睡眠时的 In fact, sleep is a systematic project In fact, sleep is not on the pillow, cover the quilt sleepy eyes, then open your eyes and wake up so simple, it is a complex process of gradual change. Why do we sometimes wake up, the body magically restore strength, but sometimes feel more tired than before going to sleep? This is the depth and state of sleep is caused by different. Researchers at the University of Chicago, when sleeping on thousands of volunteers