Resting heart rate

[Loperen]

I don’t get it. I am laying here, resting with a steady 54 bpm. According to pretty much any webpage I have consulted this IS my very resting heart rate. Measured while resting. Still Fitbit insists on telling me that my resting rate is 63. Pretty much every day with a few exceptions. Now, why does Fitbit have their own definition of “resting heart rate”? It is like having your own definition of speed and telling people that they’re driving at 62 km/h when they’ actually doing 54. 

[JohnnyRow]

It is well-recognized Fitbit has its own calculation of resting heart rate, and nobody here could tell you exactly how it is calculated or why, but Fitbit's RHR is still useful for the same purposes:

6 Things Your Resting Heart Rate Can Tell You About Your Health

[Loperen]

Well, what can I say? The article you are linking to refers to «normal resting heart rate», so it still beats me why Fitbit decides to make up their own definition of a well established term. They may be on to something, and their mysterious algorithm my be super useful, but right now it is super confusing and I don’t know if my RHR is good or OK. For now, and as long as nobody else uses their super smart algorithms, it can only be used for a relative comparison, telling me that it is getting lower. Eventually, I hope. My resting heart rate has actually dropped, but Fitbit doesn’t think so yet.