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Sleep debt

Sleep debt adds up how far you fell short of your sleep target over the last week.

  • Measured against your sleep goal, automatic or chosen.
  • A short night adds to it. A long night takes some back.
  • No single night can add or take back too much, so neither one all-nighter nor one long lie-in can define the week.
  • The Sleep detail on Today shows it as Short by or Ahead by. It does not change your score.

Related guides

Sleep goal Sleep score Reminders

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Push is a general wellness feature, not a substitute for professional medical judgment, does not account for existing conditions or medications.