有研究发现,与每晚睡眠超过7小时或不足7小时的老年人相比,每晚睡眠限制在7小时的老年人其大脑衰老可推迟两年。看到这个结论,不禁问,我的睡眠时间合适吗?睡眠时限因人而异正常的睡眠结构周期分两个阶段:非快速眼动睡眠和快速眼动睡眠。它们交替出现,交替一次称为一个睡眠周期,每夜通常有四五个睡眠周期,每个周期90~110分钟。其实, A study found that compared with elderly people who sleep more than 7 hours or less every night, their brain aging can be delayed for two years in the elderly with 7 hours of sleep restriction each night. See this conclusion, can not help but ask, my sleep time is appropriate? Sleep time varies from person to person normal sleep structure cycle is divided into two phases: non-REM sleep and REM sleep. They alternate, alternating once called a sleep cycle, usually four or five sleep cycles per night, each cycle of 90 to 110 minutes. in fact,