Tag Archives: cerebralspinal fluid

Why do we need sleep?

Before 2013, we didn’t really know the answer to this question. We knew that our brains and bodies work better after sleep. But what we didn’t know, until now, was why. Scientists report the first major mechanical reason our brains need to sleep in Science (Xie et al., 2013) — certain cleaning mechanisms in the brain work better when we shut… Read more »