As I mentioned in a previous post, I have been working with a cardiologist to determine why I have such a slow heart rate. It is typical for my heart rate to rest below 50 bpm during the day and fall below 40 bpm during the night while sleeping. While it isn't abnormal for athletes to have low resting heart rates, and while I am very fitness conscious, I do not consider myself an athelete and therefore a very slow heart rate isn't necessarily normal.
It's worth noting that I don't have symptoms of any kind. The only reason that I am aware of the abnormally slow heart rate is because my Apple Watch lets me know and I have also seen my Kardia device or my Omron blood pressure monitor indicate bradycardia. Additionally, this isn't anything new. I am fairly certain that my heart rate has been roughly this slow for the better part of my life.
I've not worn a holter monitor for multiple multi-day periods. The first time was a three day monitor and then I needed to wear one again for a period of 7 days in order for the cardiologist to gather more data.
On the side, I decided to create a tool to extract the heart rate date from my Apple Watch into a CSV file and also create some charts to show my heart rate data. This Apple Heart Rate tool has been on this site for a couple of months now, but I've since continued improving it and adding some more features.
I just updated the tool to also incorporate a chart to show activity over the last 14 day period, grouped into 20 minute totals. The activity values aren't necessarily easy to interpret but I do like the idea of being able to see how active I was on a specific day in the recent weeks and compare that to the related heart rate data.
Since my last 7 day holter monitor, I haven't yet heard back from the cardiologist, so I assume it's ok. However, the last time it took about a week before I heard anything so I partly expect to hear back sooner than later.