@carlwgordon I understand your hesitation but being able to exercise as you describe--I can and do walk the treadmill at 3.9 daily for 40 minutes and also the elliptical machine at level 8 for 35 minutes daily. This is great for you but it doesn't necessarily decrease the risk of stroke with A-fib. Do you take ASA? My brother has had an A-fib diagnosis for years and he took baby ASA until recently when he had a recurrence. I don't know how old you are but stroke risk is about the worst thing that comes with A-fib and I wouldn't downplay that at all. Have you discussed this with your cardiologist? It is, of course, your decision but a stroke can ruin your quality of life, even if it is a mild one. Good luck.