缺乏光照有可能破坏你的醒睡周期和昼夜节律，还可能改变一种叫血清素的脑化学物质进而影响情绪。
Lack of light may upset your sleep-wake cycle and other circadian rhythms. And it may cause problems with a brain chemical called serotonin that affects mood.
你翻来覆去睡不着觉，并且只睡4个小时，这种情况只要一晚上，它就会对你身体通使用胰岛素将糖类转化成能量的能力能产生潜在的影响。
Just one night of tossing and turning and getting only four hours' sleep can 'profoundly' affect the body's ability to use insulin to convert sugar into energy.
疾病：对青少年健康危害的实际上是相当可怕。一份1999年的研究发现11个连续6晚只睡4个小时的健康学生的胰岛素和血糖水平跟那些处在糖尿病边缘的人很相似。
Discovered that 11 healthy students who slept only four hours per night for six nights showed insulin and blood sugar levels similar to those of people "on the verge of diabetes."
疾病：对青少年健康危害的实际上是相当可怕。一份1999年的研究发现11个连续6晚只睡4个小时的健康学生的胰岛素和血糖水平跟那些处在糖尿病边缘的人很相似。
Discovered that 11 healthy students who slept only four hours per night for six nights showed insulin and blood sugar levels similar to those of people "on the verge of diabetes."
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