ABCD

Answers

Stanford sleep researcher William Dement said that after 50 years of studying sleep, the only really solid explanation he knows for why we do it is 'because we get sleepy'.
[[Two figures are walking and talking to each other.]] Figure One: Humans are defined by our curiosity, our hunger for answers. Figure Two: We all spend a third of our lives lying down with our eyes closed and *nobody knows why.* Figure One: ...touché. {{Title text: Stanford sleep researcher William Dement said that after 50 years of studying sleep, the only really solid explanation he knows for why we do it is 'because we get sleepy'.}}
Stanford sleep researcher William Dement said that after 50 years of studying sleep, the only really solid explanation he knows for why we do it is 'because we get sleepy'.