Your room should be quiet and sufficiently dark, because darkness prompts the pineal gland to produce melatonin, the hormone that regulates circadian rhythms (your 24-hour body clock).
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Why do people like the dark, because darkness can hide sadness.
为什么人类喜欢黑暗，因为黑暗可以掩饰忧伤。
I, because of my philosophical eminence, was early given audience with the Prince of Darkness.
我，因为在哲学上有所建树，较早地得到了觐见黑暗王子的许可。
Because I was not cut off before the darkness, [neither] hath he covered the darkness from my face.
我的恐惧，不是因为黑暗，也不是因为幽暗蒙蔽我的脸。
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