Sometimes I hear from patients, ” I just don’t feel well” or “I love to exercise but my exercise capacity has soundly decreased”. There can be many reasons for this, but one that is often overlooked is atrial fibrillation. AF can be quite serious but is very treatable. If you like to exercise, or even if you don’t, it’s simple to learn how to take your own pulse. I would be happy to demonstrate, or see you if this is what describes what’s been happening to you lately. If you are at risk for AF, try to limit alcohol or eliminate it altogether.