Fitness tracker sleep data - extremely low deep sleep.
Broke my old fitness tracker several months ago and finally replaced – new one is more specific. It shows deep sleep between 0 and 8%, light sleep between 60 and 90% and REM between 12% and 36% of the sleep time.
Per the Sleep Foundation a person will typically go through four to six sleep cycles per night. In each cycle, stage 1 (light sleep) is 1 to 7 min, stage 2 (also light sleep) is 10-25 min, stage 3 (deep sleep) is 20-40 min, REM stage is 10-60 min.
Two things of note:
1) I don't seem to have a pattern of cycles at all.
2) I rarely get into the deep sleep stage and when I do, it's far short of that 20-40 minutes.
This is consistent with my feeling severely exhausted even when I wake up and not physically or mentally recovered/refreshed.
I have a CPAP (mild apnea) and it's numbers are reasonable, the AHIs are a bit high (6 to 8, rather than 5 or under), but they bounce a lot.
I'm scheduling my annual exam with my sleep med doctor – it's been 8-9(?) years since my last sleep study, so I will ask if a another is advised. I will also ask about the sleep tracking and cycle business.
I know these fitness trackers aren't medical-grade devices and are subject to error, but this appears way off.
Interested if anyone has seen symptoms similar to this, what diagnostics did their doctors do and what was done for treatment.
Thanks in advance.