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A comment on What I learned by living without artificial light. Parent comment

Re:What I learned by living without artificial light by dingo_bat on Thursday April 26, 2018 @01:54PM (#16934031)
I think the iwatch has a function that tracks your movements during sleep and can make some kind of qualitative assessment.
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Re:What I learned by living without artificial light by paulcole on Thursday April 26, 2018 @07:10PM (#16936825)
If the watch tells you you’re sleeping bad do you think it makes you feel worse physically? There should be an app that measures your physical reaction to checking the sleep quality app.
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Re:What I learned by living without artificial light by jghn on Thursday April 26, 2018 @05:56PM (#16936233)
It seems to be measuring movement and heart rate
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