""From EBE analysis, ŌURA ring had a 96% sensitivity to detect sleep, and agreement of 65%, 51%, and 61%, in detecting "light sleep" (N1), "deep sleep" (N2 + N3), and REM sleep, respectively. "For a person to be worrying about their sleep stages is like being worried about the gas makeup of the air you're breathing in," he said." I didn't exhaustively research but based on un-biased available science I found at the time, any investment (in devices/apps) was not worth time and money. I did a lot of research when a friend went all in on sleep monitoring and wound up worse than when he started (worrying over data). I recall reading a paper that found that compared to clinical sleep study equipment (you know, electrodes all over your head) that most devices were random at best in terms of measuring REM sleep. Looking back at my time in college makes me wonder sometimes how much knowledge I didn't retain or learn due to poor sleep and health habits. When I'm above 120 mg/dL I start losing quality sleep, and above 200 mg/dL I get no deep sleep and low amounts of quality sleep with a higher heart rate.Īll these things before the app I had a gut feeling they were minor impacts on my sleep, but turns out they were incredibly impactful. I'm a type 1 diabetic so sleeping with my blood sugar at around 80 mg/dL means I get a full night of restful sleep. Otherwise I average around 1 hour of deep sleep on a normal day. Running for at least 3 miles at about 70-80% max heart rate (or shorter distances with higher intensity) guarantees a night of at least 2.5 hours of deep sleep and up to 3.5 according to the app. Avoiding alcohol at night entirely (and no more than 1 if it was a social event I felt like drinking at) They weren't new or groundbreaking, but the data really hammered home the point for me. I can see when I woke up, even if it's just for a few seconds while I change position.įor me it was a few general trends that I focused on combating due to their clear correlation with poor sleep. Breathing rate becomes much more steady when asleep. * My CPAP, on the other hand, is very useful for telling apart sleep & waking. This is true even when I'm awake during this "deep sleep" malarky. Apparently I always start my nights with a block of deep sleep, followed by an alternating pattern of light & REM. * The deep sleep vs REM classification seems to be based more on time-of-day than on anything else. You would think that the wrist movement would be a clue to not being asleep, but no. * Both the fitbit and the garmins have mistaken masturbation for deep sleep. When I compare the results with an actual on-finger SpO2 monitor, there is zero correlation. Which is basically a random number generator with red LED. I've tried several devices (withings, 2 garmin smart watches and a fitbit), and quite frankly, the results have been appalling. Anecdata: Have sleep apnea, so am interested in better sleep, and I'm hooked up to a CPAP machine which registers every breath I take.
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