The First Real Reason We Need To Sleep - Business Insider

睡眠は、起きている時に溜まった毒素を浄化する機能をはたしている。
There are two types of cells in the brain — the neurons that send signals and the glial that keep them healthy. They found that these glial cells seem to create these cleaning channels around the neurons.
Read more: http://www.businessinsider.com/the-first-real-reason-we-need-to-sleep-2013-10#ixzz2i1xCErkK

The First Real Reason We Need To Sleep - Business Insider: