The only common factor is that afterwards, I am left wiped out. I think I was out of bed about five hours. And I slept non-stop. We drove into town to run an errand and had lunch while out. Once I got home, I had a strange desire for ice cream, had a small bowl, and went straight back to bed. And fell instantly to sleep.
The next day was better - at least I was awake! But I am going to try to get my blog posts back up to date. The not blogging bothered me the whole time!