It does seem high to me, but my resting rate has historically been low. Many have naturally higher rates, sometimes quite substantially. The fact is that the medical community won't likely be alarmed as long as it's running at the rate you claim. The nightly rate is good, as far as I know. My own heart rises from 60+ BPM to 105 when I move for more than it takes to refill my tea vat or to let the dog out. Half an hour later, when I'm warmed up during my walks, it rises to 115-125 So, you're by no means out of line. If your rate were quite volatile, jumping from 65 to 110 while seated and not under any emotional duress, I would say that variability is unusual and I would approach my GP about it very soon. Note that heart rate variability is an established measure of heart health. Some variability is good. Almost no variability is not good. Too much volatility is probably, not certainly, not good. If your rates are quite consistent, then I feel you have little to be concerned with. Again, though, anxiety and concern about these things can eventually cause their own problems, so if you feel you'd like to know, please consult your physician. Maybe a Holter Monitor for 18-24 hrs might be a good thing if for no other reason than to allay your fears.