According to Wikipedia, “sleep is a naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep, and reduced interactions with surroundings”.
Whew! What a lot of responsibility involved in sleeping! Especially when we should be using that time to rest up!
More from Wikipedia — “It is distinguished from wakefulness by a decreased ability to react to stimuli, but more reactive than a coma or disorders of consciousness, with sleep displaying very different and active brain patterns”
So…we have all that to do, plus our ability to do it is decreased!! That’s a lot to think about. Pretty tiring. I guess I’d better catch up on my sleep — but it seems like a lot of work!