why do your eyes enjoy to be closed surrounded by lay down to sleep?

why do your eyes enjoy to be closed surrounded by lay down to sleep?
they don't, but it is generally easier to rest when brain does not hold to process the visual input from eyes
They don't, but to sleep your brain have to produce melotonin, which is only produced when within is very little wishy-washy in the room. It's also tricky for the brain to make melotonin if it have to process images from the eyes at one and the same time.
To keep them moist and protect the eyeballs. If you slept and yours eyes stayed initiate the air would dry them and bits from your bedding would bring back into them as there would be no protection and you would finish up with eye infections.
Rapid Eye Movement. REM Sleep cause the eyes to twitch and this is a part of Melatonin formation surrounded by the PONS of the Brain. It is activated within a Dark Enviroment. This is why our eyes are closed and it is a reflex so we do not damage our eyes during sleep or or lower consciousness. Herbert West III west.herb@yahoo.com
You don't own to sleep with your eyes closed, but your MOIST eyeballs prefer it.