After the second dose of Pfizer Dr. Nikita Patel spent that day on the couch.
She had chills and fatigue for about 24 hours.
Allegedly her experience isn't uncommon.
Here's some of the other side effects more common after the second injection
Pain at the injection site, tiredness, headaches, muscle pain, joint pain, fever
Similar warnings for the Moderna version. That second dose is the pits apparently comfortwise. WHY?
Would you think it more likely that the FIRST DOSE would have the worst side effects? Sure doesn't appeal to me.
The key to reducing soreness in your arm is to learn to relax it. You can practice anytime. Just let your arm go limp. Don't hold any tension is the shoulder muscle (the injection site). It may not stop the pain 100%, but it can significantly reduce it. When people are about to get a shot, their typical reaction is to tense up (the fight or flight response). This tightens the muscle fibers, which means there are more of them to bruise. Plus it keeps your mind off what's going on.