Atrial Fib here. Had it since I was 50 (now 57). Flecainide, Atenelol, and healthy amounts Magnesium supplements keep the episodes down to once a week for 4 - 10 hours. Thats much better than it used to be (twice weekly for 24+ hours). Ablation will likely be in my future but, I'll put it off until it becomes intolerable. I'm happy with my performance as long as the heart doesn't go into A-fib during a ride, which it does do on occasion. Otherwise, a somewhat lower max heart rate is the only handicap and, frankly it doesn't seem like much of one.