Sudden jump in HRV

[asnes]

Despite being very active both in my job and recreationally, my HRV has always been garbage - between 10 and 40 for the past three years. I never took it too seriously since I’ve had zero cardio issues.

Now, over the past week it’s jumped to 90 and has been steadily increasing to 150 last night with no changes to my diet or exercise routine. It even went up over my birthday when I gobbled sugar and that always screws negatively with my numbers.

I did quit smoking about 8 months ago so I’m wondering if I turned some better health corner and if anyone else has experienced anything like it. It didn’t budge when I quit drinking a couple years ago.

Not asking for medical advice or anything. Just curious.

[RiekoC]

Hello & welcome @asnes 

You might be interested in this thread (<-- click) on how Fitbit algorithm calculates HRV. 

It could be that you're seeing an improvement in your health now that you've quit smoking. 👍

[DaveJS]

Sorry I'm late to reply but I would get checked for an arrhythmia. I have atrial fibrillation and when my heart is in normal sinus rhythm my HRV ranges from about 20 to 30. When I have an episode of AF, my HRV increases first to about 70 then climbs and stays around 140. It's a false high reading as the arrhythmia means that the Fitbit can't get a steady and accurate reading. Just one possibility I guess.