I wear a Fitbit Charge HR, which has a heart monitor that is pretty accurate (within a beat or two of what hospital instruments say) except for sudden spikes up or down. My heart rate is now in the high 40s at rest, has been as low as 38 while asleep, is usually in the 50s during the daytime but can get into normal range if I’m active. I can’t get anyone at my primary care or cardiologist’s office to give me an idea of what’s so long that I should call them! I’m betting that below 40 is a concern, but all they’ve said is that heart rates lower when we’re asleep. Duh! I know that. What I want to know is at what point should I seek their help if that happens.
Does anybody know?