My wake-up schedule is usually set for 7am. If I happen to sleep in, say, until 9am, will the AW track the extra two hours of sleep and count it as "sleeping"?
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Does Apple Watch continue to track your sleep when sleeping beyond the schedule?
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Yes. It'll track as long as you sleep. Also if you go to sleep after the set time you have in your Watch, it'll only track when you actually go to sleep/stop moving.
Yes. I have my wake up time set at 7 am, but slept until 8:16 this morning and it tracked it all the way through.
I am very surprised about that. My understanding is that it only tracks while the Sleep Focus is on. Sleep Focus can be turned on by setting a schedule or manually from the Control Centre, which is what I do as my bedtime and waking time are too variable and it is very little trouble to turn it on just before lights out.
I’ve been trying sleep monitor since getting my Ultra, and it has tracked sleep after the schedule has ended.
Just to confirm this, are you seeing raw data for times outside your schedule in Health > Sleep > Show all Data >All Recorded Data, like this:
Yes. My sleep schedule is set from midnight until 7:00 am, here was my data from that night/morning (I manually turn Sleep Focus on when I go to bed, and it turns off automatically at 7:00 am):
Thanks. Interesting. I wonder if they have introduced some logic to recognise oversleep events. "If biometrics show user still sleeping at end of schedule period, continue recording".
Presumably you only turn it on manually if you go to bed before the scheduled start time, overriding the schedule.
It would interesting to know if the same applies in you go to sleep before the scheduled start time (without turning on manually). I suspect this would not record sleep.
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I can see how the algorithm could detect sleep going on past schedule, but predicting sleep before schedule would I imagine be much harder or near impossible, so I suspect you are right.
👍Apps like AutoSleep have been doing that for ages.I can see how the algorithm could detect sleep going on past schedule, but predicting sleep before schedule would I imagine be much harder or near impossible, so I suspect you are right.
Indeed they have and getting it wrong! If Autosleep works for you that's great. My natural pulse is very slow and Autosleep kept telling I had been asleep in the day. If I changed the calibration to fix this the nights were wrong. I also find the Autosleep interface over complicated. I tried other third party apps which detect sleep all the time with similar results, so much happier with Apple Sleep and manually turning on detection at bedtime and off on waking.
Well as you say you've got a very slow pulse rate and it doesn't work for you but for most average people, it does. There are always going to be edge cases where it doesn't work for everyone.
I have it set so my sleep schedule doesn't automatically turn on Sleep Focus. I don't go to bed at the same time every night, sometimes I'm in bed by 10:30 or 11:00, sometimes I'm up until 1:00 or 1:30, so I always set Sleep Focus manually.
I looked back at the last week of data, there were a couple nights where it recorded sleep prior to my scheduled time, after I had manually enabled Sleep Focus.
Sleep tracking isn't perfect, but it usually gets it close for me. It's a big change from my Garmin Fenix 6, which would sometimes show me asleep from 9:00 pm on, when in reality I was sitting at my computer from 9:00 until 11:30 (Garmin doesn't have any "Focus" modes or any way to manually tell it you're going to bed - it's all estimated off the watch sensors).
Interesting, that was one of the reasons why I thought it would be difficult to predict when someone was sleeping.
I think it would be difficult to differentiate someone lounging on a sofa reading or watching TV from someone sleeping.
My sleeping heart rate is only a little lower at times than my resting heart rate from the data I have so far trying sleep monitoring on my Ultra.
I have no idea how sleep apps do it, but the way I'd do it if I were programming a sleep app is to watch for REM sleep, which has a very distinct breath/heart rate pattern, then assume that periods of stillness before and after that are sleep. Determining when people wake from sleep should be fairly easy because there would be sudden increase in motion. The most difficult thing to do is probably determine when people drift off to sleep while doing a sedentary activity like watching TV. Reading actually is easier to detect, because you'd move your hand to turn pages.
That assumes you go to REM sleep first, generally that is the second stage for me.
I read via a Kindle so turning a page doesn’t move my watch arm.
But I guess you are on right track of associating patterns to establish sleep.
Yes, REM is not the first stage of sleep, which is why I said look for REM, then assign the period of stillness before that as sleep. The watch is recording your movements continuously, so all sleep apps do is analyze the data afterwards, and decide which periods were sleep.
And how do you turn pages on a kindle, push buttons? Swipe with your non-watch hand? Not a fan of e-ink, so I've never used a kindle.
Yes, just a swipe with a finger, most often my right hand which is my non watch arm.
I’m late to the discussion but have been trying to find rhyme and reason behind it.
I have nights where I have to be up for international calls, so my sleep schedule is usually 1:50am with a wind down at 1:20.
The reason for my curiosity was because when I sleep for only 3-6 hours for a week or two straight, I don’t exactly “go to bed” - I call it losing consciousness (just going sleep while working on a computer etc.)
I noticed that it does record your sleep - even before your wind down starts. But it is sporadic and seems to be usually within a certain window before your sleep schedule.
Last night was the usual 1:50, but I knocked out around sometime before midnight, I assume. Lo and behold, the watch began tracking my sleep at 12:27am with a “in bed at 12:20am (it is possible it is 1 hour before wind down) If I ever figure out a consistent formula, to the detriment of my health, and in the name of science, I will come back to let post it here.
But yes, it does track sleep before your bedtime and even before your wind down (if you have one).
Edit: because grammar is hard.
I have nights where I have to be up for international calls, so my sleep schedule is usually 1:50am with a wind down at 1:20.
The reason for my curiosity was because when I sleep for only 3-6 hours for a week or two straight, I don’t exactly “go to bed” - I call it losing consciousness (just going sleep while working on a computer etc.)
I noticed that it does record your sleep - even before your wind down starts. But it is sporadic and seems to be usually within a certain window before your sleep schedule.
Last night was the usual 1:50, but I knocked out around sometime before midnight, I assume. Lo and behold, the watch began tracking my sleep at 12:27am with a “in bed at 12:20am (it is possible it is 1 hour before wind down) If I ever figure out a consistent formula, to the detriment of my health, and in the name of science, I will come back to let post it here.
But yes, it does track sleep before your bedtime and even before your wind down (if you have one).
Edit: because grammar is hard.
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