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    Sleep tracking - Inaccurate detection of time to fall asleep

    Scheduled Pinned Locked Moved Suunto Race
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    • Anthony GuillemetteA Offline
      Anthony Guillemette Bronze Member
      last edited by

      Since I have the Race, I have had big problems detecting the time I go to sleep which is always delayed by one or two hours. By correlation, I never have nap detection either, unless I take a really long nap.

      We see that my average sleep start time is at 2 hours which is much later than reality, and therefore my sleep duration is also distorted. Note that I can have quite restless sleep and that I have a little sleep apnea (without a device).

      Screenshot_20240807_100602.jpg

      Last week, it detected falling asleep twice at more than 3 a.m. which is not at all the reality, even if those were nights when I slept poorly. Surprisingly on one night it detected falling asleep before midnight which is quite close to reality. We even see one night where I slept really badly because of the heat which was detected as only two naps.

      Screenshot_20240807_100454.jpg


      Here is the sleep detected data last night, knowing that I was in bed at 12:45 a.m., I turned off the light at 1 a.m. and must have fallen asleep within the next 5 minutes.

      Screenshot_20240807_094616.jpg

      Screenshot_20240807_094648.jpg

      Screenshot_20240807_094704.jpg


      As read on other forum topics, I have tried several settings of my resting heart rate (currently at 60bpm, but also tested at 40, 45 or 50 bpm) without success.

      I had the 9 Peak before, and without being perfect, the sleep detection was still more realistic.

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      • Anthony GuillemetteA Offline
        Anthony Guillemette Bronze Member
        last edited by

        no idea why it works so bad for me ?

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        • wzxecrW Offline
          wzxecr
          last edited by wzxecr

          Did you find a way to make it work ?
          I have the same issue with Race S.
          I have it for a month now, and except on two times, it always detects my start sleep time 2/3 hours later than reality (turn off lights at 11PM and it says I fell asleep at 2/3AM …)

          It is not a big deal as I rather trust my sensations than the watch but due to that, recovery stats are bad and other metrics are impacted…

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          • I Offline
            IceRim @wzxecr
            last edited by

            @wzxecr You can try to update the firmware. I use the newest firmware 2.43.8, it was stable.

            wzxecrW 1 Reply Last reply Reply Quote 0
            • wzxecrW Offline
              wzxecr @IceRim
              last edited by wzxecr

              @IceRim I did but unfortunately same issue (yesterday and this night)
              For example this night it reports

              • falling asleep : 3AM (turned off light at 11PM)
              • wakeup : 7AM (accurate)
              • nap detected : between 1h - 1h42 (AM)

              Will try to change some params to see (rest HR or sleep target)

              Yesterday (firmware 2.43.8) almost all was incorrect
              Start/end sleep time and even the sleep duration seemed incorrect

              Screenshot 2025-06-19 at 10.25.27.png

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