Don't know ...
What causes it, but man was I exhausted and down today, without any clear reason for it. Sometimes worrying, but I didn’t die, so I’ll be fine tomorrow again, I hope.
Except the early getting up tomorrow, because of this completely useless summertime change that is still in place, absolutely outdated and causes more issues than it helps anymore.
The weather crazy as well, but really only around here, friend of mine who lives 20 minutes away had close to no rain. We had a heavy pour down of hail followed by 2-3 hours rain.