The Function of Sleep

Sleep in animals and sleep deprivation, the consequences of that. We don't know very much about the why of sleep; so whyis sleep necessary? And i want to come to that. But before we get there, i want to say a few other things about sleep, which is sort of relevant to understanding the functions of sleep. There are two aspects that one can think about when thinking about the function of sleep. One is, well, what types of organisms sleep? So that where sleep sits in the in the story of evolution might give us a hint about what its function might be. A second potential way of understanding thefunction of sleep is to look at what happens when we don't