房主大人我给你翻译试一试，只是大概意思，谅解下~As you sleep,you pass through a sequence of sleep states,light sleep ,deep sleep and REM sleep,and that repeats approximately every 90 minutes. 当你睡觉时，你会连续通过3个阶段，轻觉（刚刚睡着时），熟睡（睡了一会儿了）和深睡（只有这个能让大脑得到最好的休息，正规的解释词忘了），这些阶段大概每90分钟会重复下。The points in that cycle at which you wake can affect how you feel later,and may even have a great impact than how long or little you have slept。你在哪一个阶段醒会影响到你醒来后的心情，也许这比你睡了多长时间更有影响。Being wakened during a light phase means you are more likely to wake up cheerful and full of life and interest. 如果你是在轻睡时醒来，你会觉得很愉快，很有活力和很有好奇的意念。看着喜欢就采用吧嘿嘿
~~简单的幸福~~
