Two thousand years ago, Galen, one of the most prominent medical researchers of the ancient world, proposed that while we're awake, our brain's motive force, its juice, would flow out to all the other parts of the body, animating them but leaving the brain all dried up, and he thought that when we sleep, all this moisture that filled the rest of the body would come rushing back, rehydrating the brain
２千年前 古代 最も高名な 医学研究者の１人ガレノスは 古代 最も高名な 医学研究者の１人ガレノスは 我々が起きている時は 脳の原動力である液が 身体の方々に行き渡り 体の各部を活気づけ 脳を干上がらせてしまい 眠っている間に 体中のこの液が 脳に流れ込み 脳を潤し