When I got the COVID booster this season, I ended up having some side effects at night, again.
Like, I woke up at 4am and I was chilled to the bone, especially in my hands and feet and extremities, and I couldn't get them warm, even by placing my hands underneath my armpits or anything.
And, it wasn't like the temp had majorly dropped that night or anything; my covers should have been sufficient to keep me warm as I slept.
So, I decided to get up and put on a sweatshirt and shorts and socks to wear underneath the covers, but it took me a minute to be able to decide to finally go and do that, because for one I was groggy, and because for another I kept thinking that I would warm up, so I kept delaying getting up to do that.
Anyhow, when I finally got out of bed and went to walk to get the stuff out of my closet, my entire lower body from the waist down was just crazily intensely sore, like nothing in recent memory, like not even after jogging or a high intensity workout, my muscles were just that achy.
The next day, however, everything was gone, and I was back to normal again, apart from feeling off because of disrupted sleep.
I think I had chills last year, as well, or was that two years ago?
You still want the booster, of course; better those side effects as a consequence of gaining immunity than getting the actual sickness, especially since the sickness can bring on long COVID in some.
Still, though, it's interesting. I wonder if my body is particularly sensitive to this?