Dr. Michael Grandner

On the flip side, if it's detecting awakening, if you're trying to figure out why you're tired, but you feel like you slept okay, you can look at the device and say like, oh, I see what's happening.

Like I'm up and down a lot during the night.

This seems very fragmented.

No wonder why I feel kind of, it's like you use that information.

So like the continuity data, the wake versus sleep data can be used for all kinds of things that might not even be totally conventional.

That's without even looking at the heart rate data, sleep stages data.

Then I'd look at the heart rate.

Heart rate should start relatively low in the evening compared to your resting and it should be dropping.

And then at some point you should have an inflection point where it sort of starts picking up again, probably around three or four in the morning when a lot of people wake up around that time.

Maybe you're just kind of sensitive to that shift in your circadian rhythm where your daytime is starting up.

And as some people get older, they might be more sensitive to it.

Or you might have a natural awakening around that time, but you don't have the same sleep pressure to get back to sleep.

So also in that heart rate data.

So like if it's staying, if your heart rate's staying high during the night, what's going on?

If it's not dropping, what's going on?

If it's rising.

during the night, what's really going on.

If you see your heart rate data looks normal, then you have a couple of periods of intense fluctuation.

What's going on in those periods of time?

They might give you some insight that there's something under the hood that's causing activation that's going on.