> it's so well understood that excessive dreaming is not conducive to good rest that i assume you are trolling? you've got it backwards. deep rem sleep the cerebrospinal fluid moves in and out of the brain, something it doesn't normally do.   rebrospinal-fluid-washing-in-brain- during-sleep/ often as people age, their ability to get good rem sleep diminishes. reduced rem sleep may be associated with cognitive decline.
Canada