I have just read your advice on Afib. I was diagnosed with Paroxymal at the beginning of the year from a NHS 72 hour heart monitor follow a stroke. As an ex athlete now in my 70s who ran 13 marathon during the 80s and 90s breaking the 3 hour barrier at London in 1987. I understand from my consultant cardiologist that this disorder is very common amongst the athletic population. My resting heart rate is in the 40s and usual activity in the 50s and low sixties. So to tell me that heart rate should be between 60 and 100 is not much help. I still run but have a high arrythmia percentage when I do so. Normally activity will rate 90% plus in sinus whilst asleep down to 40% should activity be heavy such as working outside. I still run so talking about gentle exercise is not much help to those like me. I have had a video call from your expert but a lot of the arrythmias were put down to monitor jogging. Any comments from you or other heart monitor wearers will be helpful.