3 ms·

It'll make you fall asleep, sure, but have you measured sleep quality?

• jibreel 9y ago
  How can you measure sleep quality ?
  • dingo_bat 9y ago
    I think the iwatch has a function that tracks your movements during sleep and can make some kind of qualitative assessment.
    • jghn 9y ago
      It seems to be measuring movement and heart rate
    • paulcole 9y ago
      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.
  • emodendroket 9y ago
    How tired you are the next day, perhaps.