O2Ring

I have a Fitbit that I've used for years. Since starting PAP therapy about 18 months ago, I've gotten a Wellue O2 ring (which says it will track sleep stages if you pay a monthly subscription) and some sleep earbuds that also claim to track sleep stages (also at least one phone-based app). I used th

I have a Wellue O2 ring (the one that take data every second). Yeah, I don't love wearing it at night. At first, I wore it on my thumb because it was less loose there than on a finger. Then I started putting tape on it to make it tighter and ended up moving it to my forefinger. More recently, I've f