TIME Magazineのインスタグラム(time) - 8月11日 11時41分

What exactly is your brain doing while you sleep? In the past five years, researchers have begun to expose a hidden world of chemical reactions, fluids flowing into and out of the brain, and the busy work of neurons that reveal the sleeping brain is as industrious as the waking one. Without good-quality sleep, those critical activities don’t take place, and as a consequence, we don’t just feel tired and cranky, but the processes that lead to certain diseases may even get seeded. One of the reasons we sleep, it now seems, might be to keep a range of illnesses—including cognitive diseases like Alzheimer’s and other dementias—at bay. Read more at the link in bio. Photo-illustration by KangHee Kim (@tinycactus)

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