does Light from sensor emitted from Garmin watch cause disturbed sleep?

TimothyBourner said:

You are saying the green light flashes on wrist every 15 seconds?

Typically, the HR is sampled every 15s, but as I wrote it may vary depending on the model, firmware, and usage mode.

Thanks

Yeah I am not sure what my model is with the green light, not sure if there is a way to find out

Because of you trux you have cued me to share this information to do with a type of protocol which involves taking night doses "

It largely depends on your sleeping position and how loose the watch is. If it's loose enough for it to get in your eyes as you're trying to sleep, it's probably looser than it should be for accurately recording incidental HR etc through the day and definitely too loose for during activities.

That said, when I had a Fenix 6 the plastic over the optical sensors irritated my skin so I wore it looser than I wear my Fenix 7 or wore the previous Garmin watches I had. I sleep on my stomach, head to one side or the other, and often with hands up near my face. I found with the Fenix 6 I sometimes (once or twice a week at most) had to twist my wrist just a little (5 degrees) to get the sensor light out of my eyes. With all others it gets in my eyes once in a blue moon (well technically less often than blue moons happen per year). I don't think it's ever happened with my current Fenix 7 and the looseness I very comfortably wear it 24/7.

Coming back to this thread I thought it may be worth bumping users

trux for example or other one here

Saying that I am basically using still the same small model - older model I mean) of garmin watch

I recently just did a sync on it after a long time (after having it on do not disturb mode - and not synced on blue tooth on the app

I had to actually change the a- wifi settings on my phone in settings put bluetooth on

I was thinking to myself - that if I have blue tooth enabled on the app right now - it still shouldn't use bluetooth/wifi as long as I keep my phone in aeroplane mode and my garmin watch in do not disturb mode

*came to mind - that shared about possible green light thinking idea could effect sleep, saw on settings that there is actually a option to switch it off- maybe I should try that if a person responds to this thread or post I and will see if effects my sleep?"

> Yeah I find/think if put the strap tighter it is less likely for green HR sensor light to go on.

It goes on still, you just don't notice it because the light doesn't leak out when it's tighter.

> I am not completely sure what you mean by "get in your eyes" tho.

Lying in bed eyes closed. Suddenly a light is shining in to my eyes (through the closed eyelids) waking me up.

> I am not sure what are "optical sensors"

All the light based sensors under the watch are optical sensors. It shines a light, then records optically what is bounced back.

> "had to twist my wrist just a little (5 degrees) to get the sensor light out of my eyes." again I am struggling to visualize what you mean in this writing

With my wrist up near my face and the watch loose, when the lights for the optical sensors come on to take a measurement, if the watch is loose enought he light leaks out the side and gets picked up by my eyes despite my eye lids being closed. Twisting my wrist a little is enough to redirect this so it's no longer straight in to my eyes from the loose gap (just reminding at this point it was a problem for the F6 because I had to wear that looser - not an issue at all on the F7 as I'm able to wear it tighter which cuts out the light leaking out the side from the optical sensors).

"Bsheep

I did not expect you yourself to get back, I am not completely sure about your writing here

part of reason why I myself Tim wrote the message above was because of OCD (that I changed the setting after a while to be able to upload- update/sync garmin watch on phone - and saw that used bluetooth.

I today just dis connected the watch on iphone 8

I will read over your message now

You are reply to things I wrote one month ago, not from my last message I see 

"because the light doesn't leak out when it's tighter." - thats what I was thinking, I agree

"uddenly a light is shining in to my eyes (through the closed eyelids) waking me up." but how would a light on your wrist get into your eyes?

"ensors under the watch are optical sensors. " okay

I can't see all the writing in the last paragraph , am not sure whta you mean f6 f7 "

"my consecous (typo) from this post is this - that light from garmin watch to sleep is not significant to affect sleep

I believe that things like EMF radiation and toxicity are more bigger of a variable "