It’s like your skin has suddenly developed mini-sensors that are 1000 times more sensitive than normal. And then your brain tells your eyes that something (or someone) is “there” but you don’t see it. You may hear it, though...
A constant droning in the background just below audible level that drives you nuts all night.
Or a buzzing in the skin that doesn’t go away, but isn’t nerves or muscle twitches.
Or, in my case, the longer you lay down and try to relax, the more ‘awake’ you are, to the point of feeling like you are fully awake and alert.
Ouch and ouch. I’m glad we have but a twin (double?). Much easier to deal with. Small by today’s standards, but it’s the bed my grandmother commissioned for her wedding, an exact mahogany replica of Thomas Jefferson’s 4-poster. (Unfortunately the canopy sits an inch too high for 8’ ceilings.)