为什么冬天易患起床“困难症”？“无痛”早起攻略请查收！

较难

高中二年级

说明文

健康与饮食

冬天到了，对于大多数人来说，每天早上的起床又变得非常困难。外面是寒冷的气温、呼啸的冷风，而被子里除了温暖还是温暖。想要按时早起，真的太难了。

Few things feel more like home than a warm bed on a winter morning. Don’t feel bad. You’re not alone in not wanting to leave it. Here’s what’s happening inside you and what you can do about it.

没有什么事情比冬天早晨温暖的床更像家了。别难过。你并不是唯一不想离开它的人。以下是你内心正在发生的事情以及你能做些什么。

To start with, your vitamin D levels are low. Vitamin D plays many roles in the body, one of which is sleep regulation. Vitamin D levels drop because of shorter daylight hours and less powerful sun rays. The shortage of Vitamin D can negatively affect sleep. Secondly, your melatonin(褪黑激素) levels are high. Melatonin plays an important role in regulating sleep cycles. An increase in melatonin sends you off to sleep at night. Melatonin is produced for a longer time in winter when nights are long than in summer when nights are short. What’s more, researchers discovered a sensory circuit in the brains of fruit flies that blocked the brain cells, promoting wakefulness. This circuit is activated only at cold temperatures. This helps explain why — for both flies and humans — it is so hard to wake up in the morning in winter.

首先，你的维生素d水平很低。维生素d在身体中起着许多作用，其中之一就是睡眠调节。维生素d水平下降是因为白天时间更短，阳光强度更低。维生素d的缺乏会对睡眠产生负面影响。其次，你的褪黑激素水平很高。褪黑激素在调节睡眠周期中起着重要作用。褪黑激素的增加会让你晚上睡觉。褪黑激素在冬天夜晚长的时候产生的时间比在夏天夜晚短的时候长。此外，研究人员在果蝇的大脑中发现了一种感觉回路，它阻断了脑细胞，促进了清醒。该电路仅在低温下激活。这有助于解释为什么 -- 对苍蝇和人类来说 -- 冬天早上很难醒来。

Whether or not you understand the science behind sleep and waking up early in winter, there are science-backed approaches you can use to wake up early feeling refreshed.