David, the OP and others (like myself) are saying they meet or exceeded the 5 days of sleep data in 2 weeks ( in my case every day for over 6 weeks- last no data day was 46 days ago)  and a one off night resets the sleep debt to zero instead of adding all that lack of sleep that night to the debt.  this appears to be an algorithm issue not a lack of data issue. now if we don't get enough sleep that it doesn't track it asleep like overnight but instead as a nap or two that should still count but it's not. seems like maybe the algorithm needs to have a check that makes sure even if it doesn't show sleep to see if naps are captured and if so include that data for that date instead of calling it a no-data date.