I woke up with cold ears

Reading more, from these posts, I wonder if all the blood that builds up in our heads as we lay for a third of a whole day, takes just as long to exit the ears as the rest of the body.

Puffy eyes and redder faces take about half an hour to disappear as our blood moves southward so why not the pressure built up around our ears? 

That pressure may account for some anomalies in our hearing that can't be explained but point to something at play.

All the best,
Nonoise

And what a clever moniker it is! 🤗

My hearing is quite variable. I have tinnitus that comes and goes, and high frequencies suddenly disappear then reappear. The result of 1- being in bands with guitarists who turn up their amp too damn loud, especially the Fender Twin Reverb, an amp I HATE!; and 2- soundmen who make "mistakes". I was on stage at The Pantages Theater on Hollywood Blvd., about to start a set with some of the guys in the core band that backed Emitt Rhodes at his "comeback" appearance at the Poptopia Festival a couple years earlier (video viewable on You Tube), when suddenly there was EXTREMELY loud feedback. I instinctively covered my ears with my hands, but the damage had already been done. All the high frequencies were gone, everything sounded muffled. I was suppose to sing harmonies that night, but that was now impossible. My hearing eventually returned to normal, but the anxiety about it didn't.

What a horrible thing to go through. It reminds me of the scene from 2001, A Space Odyssey, when the monolith sends it's signal to a moon of Jupiter. The the astronauts could hear through their helmets but  couldn't cover their ears, despite their attempts.

I'm glad your hearing eventually returned.

All the best,
Nonoise