Rowan Jacobsen

speaker

1,919 appearances 4 recordings 4 series first heard Jul 2022 last heard 26 Jun

Rowan Jacobsen’s voice in public audio — every appearance, attributed to the second.

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recordings per month · last 12 months

Recordings per month over the last 12 months — 3 in all, peaking in Jun 2026 with 3.

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Yeah.

They call it the first sleep and the second sleep.

And it was, there's lots of references to it, um, hundreds of years ago.

And I think, but I think it was more in the winter, you know, in summer, um, in your part of the world, it's not getting dark till like what?

So yeah, so the night is short.

So I think then you get a more like one session of sleep.

But in the Middle Ages, it was very common to wake up and do chores or meet people or, you know, have sex, right?

And yeah, there's a researcher named Roger Akerch who's written a lot about it.

But I don't think that's naturally the best, you know?

Anyway, what I do is pretty early on, I'm making sure there's no bright lights, like by eight or nine.

I'll have the lighting get pretty dim to kind of track the day.

And I try to get outside like a lot during the day.

Yeah, which is so interesting.

People don't realize that.

The receptors, the proteins in our eyes that detect light are called opsins.

And we have them in every skin cell.

And we have them in our brain.

We even, like the subcutaneous fat underneath our skin has opsins that can detect blue light.

And when it detects blue light, it mobilizes fat.

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