sugar and caffine causes alot of the miss beats. i found L carentine with co q 10 helps my miss beats it has reduced dramatic I use to get like 100 non stop beats. But trust me it really works!!!!go to www.bioinnovations.net and get the L carentine with co q 10 try it for 1 week and you will see the difference. I was scared to death to take any meds but one day it had missed really hard and bad and after i started taking it in one week it improved alot!!!