I had some funky heart rate issues after the second vaccine. I couldn’t exercise for a few months because it would go bonkers with palpitations and arrhythmia. Tests came back negative for myocarditis but I never had such issues before.
Now I hear that studies exist claiming almost 1 in 35 vaccinated have some kind of heart injury, and though I take it with a grain of salt until there is more data, I might be sitting this one out. I recently got COVID-19 and while it sucked for a couple days, I came through it just fine.