Just thought I'd pass this along in case it might help someone else...
My dentist recommended a night guard because apparently I was grinding my teeth in my sleep, or some such thing... Anyway I got it a week ago, and it feels amazing when I wear it. It puts slight pressure on my teeth, and skull, and brain, and has a numbing effect, that makes me feel drugged out and sleepy.
I've been a lifelong insomniac (lifetime average of 2 hours sleep per night) - but this past week it's been more like 3 or 4 hours. And the time that I'm awake, I'm only half awake, and really groggy.
Anyway I just wanted to mention that, in case anyone else is desperate enough to give it a try!