Dr. Michael Grandner

I don't remember, I don't remember...

A paper looking at, so like in my world, there's a difference between behavioral rhythms and circadian rhythms.

Yeah.

Because there's like a circadian patterning, but like, did the melatonin rise at the normal time?

It just got blunted because of the light you turned on and the activity you were engaging in, for example.

Yeah, I mean, it increases fast frequency EEG activity, so it'll make your sleep shallower.

So it'll probably, I mean, I'd have to look at the literature, but if I had to make a prediction, my guess is it would dramatically reduce slow sleep and deep sleep because you can't get into that stage if your brain's sort of still wired and active.

It might be.

It might be.

But also again, people, there's huge variability in how people metabolize caffeine also.

So some people might be more resistant to it.

Some people like I'd be for those people, I would really be curious to see their data.

Or probably.

No, that's when it's peaking.

Right.

Like, I don't know.

Or maybe just the way it interacts with adenosine is different.

Or maybe they're just so sleepy.

Their sleep drive is so high.

It's the way adenosine is interfacing with their sleep-wake rate.