I, too, slept less than well. I blame rhinitis.
I was sleeping well, for about an hour, and then woke up and had a sneezing fit.
Then my nostrils felt irritated and wonky.
I sneezed many times through the night. Could not wear my CPAP.
And I am up way too early, and still sneezing, blowing my nose, etc.
That's what I get, I reckon, for several straight days of non-issues.