呵呵,看来我的算术不及格啊.要是能如此简单地计算寿命长短的话就太好了.看这个:

来源: 于 2013-07-12 06:50:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

 其实对大多数人来说,NREM Sleep从婴儿到老年没有太显著的变化.反而是REM Sleep有较大的改变.

There is a sharp drop in the amount of REM sleep after
the early years of life, falling from eight hours at birth to less than one hour in old age. The change in the amount of NREM sleep is much less marked, falling from eight 8 hours to about five hours over our lifespan.