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How accurate is Fitbit sleep data? - Nick Pullano's blog, CEO of PetDoors.com, sharer of memories and life hacks.
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Fitbit's New Sleep Tracking - A Month Testing The Alta HR
Not showing Sleep Stages - possible reason why - Fitbit Community
The Sad Truth About Sleep-Tracking Devices and Apps - The New York Times
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Sleep tracker not working - Fitbit Community
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How can I use my Fitbit device to sleep better?
Fitbit not tracking sleep or is not accurate? Let's fix it - MyHealthyApple
Sleep Tracking spits. Anyone know why Fitbit keeps splitting my nightly sleep into 2 parts with a big gap in-between the times, happens several times a week? Very unreliable the last year