This is weird. My arm is more sore than the other times - I'm sure it's happenstance. The side effects are slightly more than the pfizer shot 2 (that one was unimpactful all around, like my annual flu shot), but still mild. A little floaty and tingly. I'll definitely be able to go about with my day. And it's nowhere near that first AZ shot. That one knocked me out for several hours and the headache was terrible.