""""Real salt is a key here, not potassium; unless you only eat fastfood and no greens / fruit; then the salt probably are to high versus potassium.""""
fast food has high potassium in the short term, maybe in the long term it is high sodium.
you even said probably, please do not give advice if you do not have experience eating fast food.
Real salt will help palpitations even for those who eat a lot of fast food, as it has just brought my heart rate down.