Why Do We Sleep?

Sleep used to be one of the last great remaining scientific mysteries. But now we've had to actually upend the conundrum. Every physiological system in the body and every single operation mind is wonderfully enhanced by sleep when you get it, and demonstrably impaired when you don't get enough. You used to think that there were kind of three pillars in the human body, diet, exercise and sleep. And now you've pretty much said it's all superseded by sleep. It is. Yes, i used to Think that sleep was the third pillar of good health, alongside diet, exercise. But i don't think that's true. I think sleep is actually the foundation on which those two