Dr. Andrew Huberman

And you want to be really careful to not combine cyclic hyperventilation and breath holds, and especially both with cold water, frankly, any water exposure.

I always say don't do Wim Hof tummo or cyclic hyperventilation breathing, even standing or seated in a puddle.

Okay.

So in response to stress, it's really if you want to be more alert,

Increase the vigor and duration of your inhales.

If you want to be more calm, increase the duration of your exhales.

Would you recommend that children also get morning sunlight?

Yes, and your pets too.

Unless they're nocturnal pets.

For anyone that had the not-so-smart idea of getting a hamster, you realize they're nocturnal, right?

They're gonna run all night long on the wheel.

In fact, rodents like to run on wheels so much that Hoppy Hofstra at Harvard has shown that if you put a little running wheel, like you know the little wheels that the mice like to run in, in a field, animals will run to the wheel and run in the field.

tells you everything you need to know about rodents.

But really, children need that, but obviously babies have sensitive eyes.

We all can potentially hurt ourselves with sunlight, and down here the UV index is very high.

When the sun is low in the sky, so-called low solar angle sunlight,

in the morning and in the evening.

The UV index, and mostly because of atmospheric interference, but some other things as well, it's not as damaging to the eyes.

That's why it's easier to watch a sunrise or a sun closer to the horizon than it is to, you know, please don't stare at the sun in any case, but an overhead sun.

So I think it's really important for circadian rhythms.