Troubleshooting Missing Sleep Data or Seeing Gaps in Graphs
If your ring's battery level is insufficient when you go to sleep (< 20%), your ring will go into Power Saving Mode to protect from battery exhaustion. When this happens, you'll see your bedtime and wake-up time, but you won't receive a detailed breakdown of your sleep for that night.
Ensure that your ring's battery level is at least 20% prior to going to bed.
Gaps in HRV and Resting Heart Rate Graphs
If you spot gaps in your resting heart rate or HRV graphs, something may have interfered with your pulse signal tracking.
Possible causes for these gaps are listed below:
- The ring is too loose and rotates around your finger easily, which means that its LED sensors aren’t positioned optimally for tracking. Or the ring is so loose that the sensors don’t have a good quality contact with your skin. Before going to bed, check that the LED sensors are underneath your finger, and the ring sits snugly enough. If the ring feels too loose, try wearing it on a different finger. Note: make sure that the ring doesn’t feel too tight, either.
- The LED sensors are dirty. You can wash the sensors and the whole ring with water and mild soap. Rinse and dry the ring thoroughly with a soft cloth.
- The ring detects a lot of movement, which temporarily disturbs pulse signal tracking. This can also happen if you’re awake during the night and move around.
- You sleep in a position where your hand goes numb (causing partially blocked blood circulation).
- Your resting heart rate is exceptionally low (below 33 bpm).
- There are interferences in tracking due to arrhythmia. It’s worth noting that gaps don’t usually mean that you would suffer from arrhythmia, and you can’t use the graph data to diagnose medical conditions.
Here’s how these gaps might look in the Oura app: