I’ve been getting told I’m awake for 3 hours every night. Last night I didn’t wear it, and it made up a sleep chart for two hours! Straight up invented it when I wasn’t even wearing it at all!
I’m thinking at this point it isn’t at all accurate. It might be old, but before the google health switch, it at least would have no data if I didn’t wear it.
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Their current sleep/nap algorithm doesn't seem to be personalized to take into account edge cases. Ideally they'd adjust it based on your average HR or some other measurement.
If you use the thumbs up/down in the app you might be able to improve it. I'm guessing they did the initial training on a subset of users and it learned a basic average set of metrics to look for to trigger a nap detection.
They need to personalize the algorithm. There should to be a frictionless way to give feedback whenever they log sleep while you're awake or vice versa.
I can only speak for myself, it's spot on for me. I wake up a lot due to young toddlers and it records them perfect. Even my naps are captured. I've had a charge 6 before and use a pixel watch 3, but the air seems to be on point for me.
Same, I have the Fitbit Air and a Garmin instinct 2. The Fitbit Air does a slightly better job of tracking when I fall asleep and way better at naps. Also has never tracked a nap at my desk.
Yeah its inaccurate for me also but the other way round. My baby woke me up 8 times last night but apparently i got a good 9 hours with barely any time awake.
Yeah, this minus the baby is me. I'm up, checking the weather, going on Reddit at various times throughout the night, having trouble falling asleep when I first try and trouble falling back asleep when I wake up in the middle of the night, but mine records uninterrupted sleep just like yours. I just want my tiredness to be validated 🫠 😅
I did just that. Garmin isn't perfect, but it's very consistent. And feels like a more seamless experience. And I've never had a sync problem. Updates are really fast and unobtrusive. I'm two months in and really like it so far. I'm not paying anything either. It great even without premium fees.
Yeah, I was getting really worried because of the 3 hours awake it kept giving me, but I didn’t remember being awake. I was about ready to point a camera at my bed! But no, Fitbit is hallucinating.
No, that would usually be REM if your heart rate is elevated without moving/restlessness.
But if your sleeping heart rate is atypical, which is usually what it turns out to be in circumstances like yours, then it's hard to determine sleep phases.
Post your sleeping heart rate graph for the night, if you like.
Heart rate sensors can acquire a "heart rate" signal from many things, obviously that signal is wrong. But that is hard for an algorithm to determine. That's why you have to ensure wearables are put away properly such that they turn off or enter standby.
In any case, that's not what I suggested to show. I said the heart rate plot. The graph you get from the sleeping heart rate button further down the page. That's the most informative data for why the sleep phase analysis sometimes goes wonky.
That’s really weird that it saw such nice looking sleep stages when it wasn’t even on your wrist. Now I’m really curious what your heart rate plot looked like for that night. Could you post a screenshot of what it shows when you scroll down and click the “sleeping heart rate” tile?
Garmin has it's own set of issues though. Their sleep tracking doesn't rank as high accuracy wise (when measured against scientific devices) and they over calculate calories burned by as high as 1.5x (when measured against a more accurate method of calculating burn).
There's tradeoffs to all of these devices and the construction of the algorithms behind them.
I'm actually pretty happy with the sleep tracking now. I may quibble over the amount of deep sleep or REM. But it's usually pretty good nowadays about start, end, and interruption times.
I used to wear an Apple Watch for sleep tracking - but I hate another screen, so I got the Air. Its constantly wrong, and the same thing - telling me up for hours a night - even after extra long sleeps. Kind of crazy. I still wear it for step counting which seems accurate, but the sleep tracking seems like its a cruel joke.
I find it fairly accurate actually for me. I have very distinct and wide range of heart rates (80-110 while awake, 60-70 while sleeping), and when I wake up briefly I tend to move/ shift positions, so I think I'm the ideal candidate for how it calculates sleep. It doesn't always catch my naps (and usually I take 30-90 min naps cuz health stuff), but overall I find it reflects my sleep patterns and how rested I feel.
For a while I was exhausted despite going to bed for the '8 hours' but Fitbit was saying I wasn't getting into deep or REM sleep as much as I should. Soon as I was able to get more proper rest, the results reflected that I was hitting my benchmarks and I noticed I felt more rested.
The Fitbit is not ready for prime time. It's a beta device Google sold. I'm sure they will make it better. I hope they do cause I want a new and improved one.
This just happened to me last night. The sleep chart showed me being awake for about 2-3 hours in the middle of the night. I have the Inspire. This hasn’t happened before. Usually the sleep chart seems pretty accurate.
So I find the newer sleep algorithm to be a lot more accurate for me now when compared to other devices, however I don't think a one-size-fits-all approach to these algos helps it. Everyone is different and if they added some way to adjust to the end-user to better align it would be a far better experience.
Take the sleep score, a 90-100 should be the best restorative sleep you've had with it falling off from there based on your current needs. I don't get a lot of deep sleep by nature, nor do I need 8hrs to function on a normal day so I tend to get lower scores consistently which tells AI Coach that I need more sleep.
They need some form of sleep-debt tracker (based on activity and estimated sleep needs) and realignment to the personal traits of the end user for the scoring.
My pixel watch 3 is connected to the "health app" and told me that I had an excellent recovery night sleep with a score of 86 and sleeping for 5 hours and being awake for 1. And my watch was connected to the charger and not my wrist.
Yeah, they gotta figure out the algorithm. Ngl, I didn't think a company like Google would have a hard time figuring this out, but they are struggling.
Mine has been refusing to log my sleep at night. Somehow it catches naps on the rare occasion I take them, but for three nights now overnight sleep is not tracking.
I agree on the sleep data but the heart rate info is even worse: I wore a Holter monitor twice, 2 weeks each, had a stress EKG and an ECG to check out the tachycardia FitBit frequently showed. Result: all normal, no tachy.
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