HRV gaps 19.18

So it's been 10 days where I'm finding gaps on the HRV graphs when I wake up. Before that day the HRV graphs were perfectly continuous. Since the day this behaviour started my HRV averages have spiked and it's also impacting my training readiness and all the other related metrics.

I haven't changed anything on my sleeping patterns or the watch fit.

I am aware there are other users with this same problem, but I haven't read any fix for it.

I am on version 19.18, I don't remember when I updated but I think it's been way more than 10 days.

Hope someone can help!

Thanks

0 G141592653589793238 4 months ago

https://forums.garmin.com/sports-fitness/running-multisport/f/forerunner-955-series/373302/955-hrv-data-not-being-recorded

Garmin-Sierra said:
All,

Please see the following statement from What is Heart Rate Variability (HRV)?:

In some cases gaps in HRV data may happen overnight while the heart rate data shows for the full night. This is due to HRV having a quality requirement. If that requirement is not met, HRV will not be recorded during that time. These gaps in information can form when the heart rate sensor has difficulty getting heart rate. It can be caused by sleeping on your wrist, having the band too loose, or anything that causes a block of blood flow or movement of the watch on the wrist. We recommend wearing the watch with a snug fit that does not cut off circulation. A lot of movement while sleeping can cause this to happen as well so if you are an active sleeper you may see these gaps in your HRV information.

If you have any further questions or concern regarding this, please reach out to Garmin Product Support directly.

0 2227187 4 months ago

same problem

0 olives_19 4 months ago

It is a software issue that Garmin refuses to fix, several trends already but it is cheaper to just say it is due to sleeping patterns

Gaps in HRV data during night - Forerunner 965 - Running/Multisport - Garmin Forums

my Epix Pro has huge gaps in HRV data - Epix (Gen 2) Series - Wearables - Garmin Forums

0 olives_19 4 months ago

There are several reports of HRV gaps during the night. Garmin-Sierra / Garmin-Laurie how many posts more need to be created for you guys to realize this is clearly a software issue?

0 jonesbmr 4 months ago in reply to olives_19

I have software version 19.18 and I’m not experiencing this

0 Grumpy from dawn till dusk 4 months ago in reply to olives_19

I cannot confirm that.

HRV charts are good for me with 19.18 - if it was a general software isssue, probably I would see this error also quite often.

BTW, sometimes (very rarely) I also have gaps in HRV charts, but it has always been like that with many different firmware versions. Most probably it is related to how the watch is placed on the arm and how the arm is placed during my sleep.

0 olives_19 4 months ago in reply to Grumpy from dawn till dusk

What I meant is not specifically from 19.18, but it is happening across every model in different versions. Is not linked to sleeping patterns. You can search in the forum, several posts of people that suddenly start seeing those gaps with nothing else changing in their lives.

0 danicodor 4 months ago in reply to olives_19

I agree with you, after writing the message I restarted the watch as suggested in another post, and all the problems disappeared, everything is back to normal since then. For me, it is clear is a software issue and not the "block of blood flow because you are sleeping on your wrist" explanation from Garmin.

0 olives_19 4 months ago in reply to danicodor

Exactly... and you restarted the watch and it is fixed, but wait for a couple of weeks and it will come again. That is what has been happening to everyone.

I even got my watch replaced... and same issue of course. It is not linked to sleeping patterns. People who have got clean graphs for years suddenly started complaining.

0 Grumpy from dawn till dusk 4 months ago in reply to olives_19

olives_19 said:
What I meant is not specifically from 19.18, but it is happening across every model in different versions. Is not linked to sleeping patterns. You can search in the forum, several posts of people that suddenly start seeing those gaps

OK, that might be.

But from the title of the thread I thought, you said 19.18 has changed something and breaks HRV charts for you. And I just wanted to say, it does not for me.

olives_19 said:
Exactly... and you restarted the watch and it is fixed, but wait for a couple of weeks and it will come again

Might be.
But just remember - the watches are small computers. Computers need restarts from time to time, smartphones also do.

Personally, i need to charge the watch around every 8-10 days. After it is back at 100%, I reboot it. Always. Just takes a minute more and will refresh the RAM and start processes new.