@gseaborn Stent? No, my arteries are not blocked. I just have a very slow natural heart rate. Always have. Dad and brother, too.
I just think the Fitbit sleep algorithms don’t take into account pacemakers and the steadiness of the heart rate with a pacer. I’ll gladly take that over being in afib!

Btw pacemaker did not and does not eliminate afib. My Medtronic pm did catch and stop my heart from going into afib about 20% of the time. But it was the pulsed field ablation a year ago that gave me my regular life back.