"if you feel like sleeping more in the winter, you're not alone," said dr. raj dasgupta, an associate professor of clinical medicine at huntington memorial hospital in pasadena, california, citing research that found at least a third of american adults reported they sleep more in the winter.
加利福尼亚州帕萨迪纳市亨廷顿纪念医院临床医学副教授Raj Dasgupta博士说：“如果你觉得自己在冬天睡得更多，那么你并不孤单。 他引用的研究发现，至少有三分之一的美国成年人说他们在冬天睡得更多。
the desire for, or occurrence of, more sleep during winter may h**e to do with how light fluctuates throughout the year.
冬季对睡眠的渴望或更多的睡眠可能与全年光线的波动有关。
our bodies receive cues from the sun when it comes to our circadian rhythm, meaning that when it is bright outside we tend to be active, but when the sun goes down, you may tend to feel tired," dasgupta said. "the decrease in sunlight causes an increase in melatonin, a hormone made in the body that regulates sleep-wake cycles."
“就昼夜节律而言，我们的身体会收到来自太阳的提示，也就是说，当外面阳光明媚时，我们往往会很兴奋，但当太阳下山时，你会感到疲倦，”达斯古普塔说。 阳光的减少导致褪黑激素的增加，褪黑激素是体内产生的一种调节睡眠-觉醒周期的激素。 ”
with the earlier production of melatonin during winter, “it would be natural to assume that a healthy person also would need more sleep during the winter,” said dr. carleara weiss, a research assistant professor in the center for nursing research at the university of buffalo.
布法罗大学护理研究中心的研究助理教授Carylla Weiss博士说：“因为褪黑激素是在冬天早些时候分泌的，我们自然会认为健康的人在冬季也需要更多的睡眠。 ”
and light influences not only sleep quantity but also sleep quality. “rem sleep is highly affected by light and darkness, so when during the winter months we h**e less light, the body is going to basically overcompensate by giving more rem sleep,” said dr. joshua tal, a new york city-based clinical psychologist specializing in sleep issues.
光照不仅会影响睡眠时间，还会影响睡眠质量。 纽约市睡眠问题临床心理学家约书亚·塔尔（Joshua Tarr）博士说：“快速眼动睡眠受到光明和黑暗的严重影响，因此当冬季光线减少时，身体基本上会通过提供更多的快速眼动睡眠来过度补偿。 ”