Hi, Thanks for writing to Health Care Magic, I am Dr Asad Riaz, I have closely read your question and I understand your concerns, I will hereby guide you regarding your health related problem. irregular heart beat have many types like Atrial fibrillation, Atrial or ventricular ectopic a , ventricular arrhythmia .. these arrhythmia have different causes but mostly due to cardiac prob but can be due to electrolytes or acid base prob too... U are good at exercise reduced ur risk of having major pathology but not exclude from having cardiac pathology , u having High BP n which itself a risk factor for IHD other factors like obesity , DM, stress, age ,family history etc .. if u were my patient I would like to do ask detail history n do through exam n then do relevant tests like ECG electrolytes n would do holter if u having Herat beat irregular sometime to see whether it is problematic n which type or beat is this .. so I recommend to visit carfiologist n have some simple test n if these are abnormal then go further work up .. I hope this answered your question, if you have more feel free to ask. Regards. Dr.Asad Riaz. General and Family Physician..