Variations

The first covid shot left me a bit tired and with a sore arm 12 hours later. That didn't last too long.

The second left me pneumonia-level fatigued 24 hours later. That lasted about 8 hours.

The booster left me fatigued and fevered 36 hours later (during the night).

Extrapolations are left as an exercise.

I spent the day testing gravity.

Given that the stuff has to be kept cold and deteriorates when warm, I wonder how much variation there is in the actual dosage. Early-birds get the big kick, those near the end of a batch get a lighter one? It might have some bearing on reactions.