One of the universal truths for most humans who appreciate things like comfort and relaxation and a collection of soft feathers and enveloping warmth and rejuvenation is that we love our sleep. It makes us feel good! And sure it wastes a lot of time, but we feel like crap when we don't have enough of it. And, beyond feeling good, we sort of need it. But why do we need it?
Why is it that we can die faster from lack of sleep than lack of food? Scishow explains the science behind sleep. [Scishow]