Day 2 (of 2) vax reaction. Had a tossing and turning night that a couple of Excedrin alleviated a bit. I was actually aware of having two sore arms for the first time, even though I've done this before. Maybe it's this latest booster, as I think DR Elmore alluded to.
Well, it should be over with tonight's sleep. What's weird about side effect reactions is that you know you're not sick -- and yet you feel completely under the weather. Oy!