Garmin Fenix 6X Pro sleep tracking: what am I doing wrong?

Sleep with my watch on religiously, but I am highly suspicious of the sleep tracking… there have been many times where I know for a fact that I got less than 6 hours and the watch tells me I got 8-9.

How does it measure sleep? As in, if you just lie really still does it think you are sleeping? Or what is the story?

TIA

all the watches do sleep tracking using HR, motion sensors, and proprietary algorithms.
So at best the sleep tracking is a good guess, at worst it is a made-up number.
These systems probably work OK if your sleep patterns are normal, not great for those of us with insomnia etc.
Accurate sleep tracking requires a lab and monitoring of brain activity. The wearables can’t do this (yet).

my Garmin does the same thing, me lying awake doing meditation/breathing exercises in an attempt to get back to sleep, shows up on the tracker as sleeping.

Sleep with my watch on religiously, but I am highly suspicious of the sleep tracking… there have been many times where I know for a fact that I got less than 6 hours and the watch tells me I got 8-9.

How does it measure sleep? As in, if you just lie really still does it think you are sleeping? Or what is the story?

TIA

Yes.

Thanks!

I have unfortunately found that the wrist based heart rate my Garmin gives me is little more than a guess (frequently off by up to 40pm in either direction during exercise) so I’m pretty confident that the sleep tracker is therefore also little more than a made up number for me. I do know other people who have found the wrist based heart rate to be fairly accurate though, so….