Bryan Johnson

We measured like 250 biomarkers and we did ice on my testicles and we took it off and it annihilated my fertility markers.

Now, a lot of people will say like, I don't care about that because I'm not trying to get pregnant or whatever, but it has a whole bunch of negative feedback loop.

Like it's a negative feedback loop.

You don't want to annihilate them.

You want good fertility markers, even if you're trying to have a baby.

It's got to be, make sure you keep the temperature.

Like as long as you get the temperature low, like whatever, whatever you do.

And then after you do it, you know, just clean it with like a hydrogen peroxide or something, you know?

So you, and then put it back in the freezer.

But yeah, I know it's like, it's uncomfortable to do it socially.

Like you go out to like a public place and it's like, who's the weird person putting, you know, the ice pack on their balls, you know?

But like it legit is, it's good science and it's a good practice.

That works.

Anything you can do to keep your testicles cold.

Yeah.

The best evidence is with a dry sauna.

And so there's wet, dry, and infrared.

And wet, the problem is it heats up your skin faster than your core temperature.

You try to get your core temperature up.

So dry sauna and infrared rarely hits the temperature levels you want.