I get palpitations every now and then and know they're likely harmless, but they still freak me tf out. For example, during a run the other day my heart seemingly out of nowhere started fluttering, like 250 bpm but very weak beats. The bout only lasted ~30 seconds but it was very unsettling. I also feel like my heart skips beats every now and again, but I can't figure out any pattern that's causing these palpitations. Any else experience this?