Hi I have done some searching and I found something called PAROXYSMAL ATRIAL TACHYCARDIA I think it is what most of us are suffering from. I haven't heard of any good cures but one-- sounds likea long shot but one sufferers doc said when symtop strikes do some sort of hand stand where your head is positioned lower than your body and this will almost instantly stop the racing heart. I haven't got smashed yet but when it happens i'm trying it . If someone else reads this and tries this let us know if it works for you ?