And they will study whether it is involving in controlling sleep quantity alone, or also what scientists call the "wakefulness-behavioral drive."
VOA: special.2009.08.26
When you're really tired sleep is what you want to do like when you're really hungry you want to eat.
你累了,就会想睡觉,正如你饿了想吃东西一样。
One sleep researcher joked that these two are connected because what happens is dreams fly around through the ether and then their erections serve as antennas so you pick them up.
有研究人员开过玩笑说,这两者是有联系的,因为梦境从上空飞过,他们的勃起就像天线一样,把梦境接收进你大脑。
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