["Bulletproof Radio, a state of high performance."

You're listening to Bulletproof Radio with Dave Asprey.

Today's cool fact of the day is that there is nose hair in your brain nerve cells.

No seriously, well sort of anyway.

And nerve cells in your brain make elaborate connections and exchange these very quick

messages with each other.

But those cells also have simpler hair-like protrusions called silia.

And scientists who are looking at the brain overlook what those little things actually do

until now.

They're figuring out that nerve cells, silia, have roles in a variety of your brain functions.

And in the part of your brain linked to appetite, they help to prevent obesity.

So there's little tiny little things like nose hairs but smaller on your nerve cells.

Also contribute to brain development, how your nerves communicate with each other, and

possibly even learning and memory.

So when someone tells you, oh your brain can't do that, that's not possible.

They don't know what the hell they're talking about.

We still don't know how the subcellular mechanisms in the brain work.

We're discovering new things every single day about what's happening at the lowest levels

of our hardware and we still don't have it all figured out.

We think we get mitochondria but there's probably some quantum stuff going on in there.

We still don't quite understand all the way.

So we're in an era of just epic discovery and the fact that your silia do something and

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