Low Oxygen readings during sleep on a Charge 4?

[Autumnphyre]

Hi everyone, I've tried to look up some information about this but it's still unclear.

I've attached a couple of my sleep graphs from my Charge 4. Is the low oxygen something I should raise with my Doctor?  I've been struggling with fatigue and brain fog for over a year, regardless of how much sleep (good or bad quality) I get. I have a good sleep hygiene/wind down routine with no screens/cool room/reading/journalling before hand (even if it's been a bit later than normal recently). Are these graphs looking normal or a bit dippy?

[LZeeW · Accepted solution]

@Autumnphyre   Here is a link to Fitbit's Help article with the relevant section expanded for you.  Low variations are typical during sleep.  Per the Help article description, high variations can be associated with breathing disturbances during sleep.

You wrote low oxygen readings in your title.  You have low variation from your average sleeping SpO2 reported in your Health Metrics.