Of Course - you already knew this

The women in my family have known this for years:

When all else fails, there is always the option of common sense. Sleep is quite possibly the most important factor in health, and neither caffeine nor sleeping pills nor adrenaline can substitute for it. “As it looks more and more like some of these processes occur exclusively during sleep and can’t be reproduced while we are awake, the consequences of losing them look more and more terrifying,” says Stickgold. “And that’s the experiment we are all in the middle of, right now.” [emphasis mine]

Link source: Newmark's Door.