Spin around ten times as fast as you can.

Stop.

Now try to walk in a straight line.

You can't. The room is moving. You're not. And your brain has absolutely no idea what's real anymore.

But why? You stopped spinning. The room never moved in the first place. So what exactly is happening inside your body that makes everything feel like it's still going?

In this episode Daniel literally spins himself dizzy before asking the question — and what they figure out together is one of those answers that makes you look at your own body completely differently.

It starts in your ear. Not the part that hears things. Much deeper than that. Inside your inner ear there are three tiny curved tubes — so small you've never thought about them — and they're filled with liquid. Floating inside that liquid are thousands of microscopic hairs. And those hairs are your body's built-in balance machine. Every time you move, the liquid moves, the hairs bend, and a message shoots straight to your brain telling it exactly which way you're going.

It's called the vestibular system. And it works perfectly.

Until you spin.

When you spin, that liquid starts swirling. The hairs bend. Your brain gets the message — we are spinning, we are spinning. All good. Makes sense.

But then you stop.

Your body stops. Your eyes stop. The room stops.

The liquid doesn't.

It keeps swirling inside those little tubes even after you're completely still. The hairs are still bending. And they're still sending that message — we are spinning, we are spinning. But your eyes are telling your brain something completely different — no we're not, everything looks still.

Two opposite messages. At exactly the same time.

Your brain can't figure out what's real. And that confusion — that's dizziness. It's not you that's dizzy. It's your liquid.

Daniel's exact words. And he's not wrong.

But then comes the question that takes the episode somewhere unexpected — if that's true, how do figure skaters spin at impossible speeds without falling over? The answer involves a technique called spotting, a brain that learns to stop panicking, and the possibility that if Daniel spins every day for long enough he might eventually stop getting dizzy altogether.

Mom's response to that last part is exactly what you'd expect.

What you'll find in this episode:

— What the vestibular system is and why it's been doing its job inside your ear this whole time without you knowing

— Why dizziness happens after you stop spinning — not while you're spinning

— How figure skaters train their brains to handle what yours can't

— Whether you could actually train yourself out of getting dizzy

— Daniel's One Big Thing — and a negotiation about spinning every day for science

Short, surprising, and the kind of episode that makes you want to immediately spin around just to think about what's happening inside your ear while you do it.

Listen, wonder, and learn.

Find us @smilewithDaniel everywhere.