A good kind of pain

6 March 2021: So far, my reactions to the second dose of the vaccine haven't been too bad. I am tired, but probably not as tired as with the first dose. This time my arm is really sore (more than last time). But it's a good kind of pain because it's a sign it's working and that's amazing. And I am lucky to be going through this on a day I can basically stay home and work at my own pace. I've got 2/3 of my midterm grading done and have done a pretty decent amount of housework. Just about to hit my 10K, too, so I might call "done" on work for the day and knock out the rest of those midterms (just seven more essays) tomorrow.