From the brains behind brains on, this is the moment of um.

Moment of um.

Moment of um comes to you from APM studios.

I'm Anna Goldfield.

Now that I'm a grown-up, I love to look back on my glory days of playing basketball

for my local rec league. I wish I could tell you that we had a really

cool mascot that did sweet flips of dance moves at our games. But our team mascot was

the color blue. Like the color. That's it. Basically we just wore blue and

called it a day. Anyway, I was a point guard and I was pretty good but one thing held me back from being the next Steph Curry.

I wore prescription sports goggles which were amazing because they helped me see but tough because

they kind of blocked my vision on both sides of my head so I

did a whole lot of ducking out of the way of the ball and not getting hit in the face

thanks reflexes.

Hi, my name is Gary and my question is why do we have reflexes?

So short answer is we have reflexes to keep us safe.

Hi, I'm Dr. Karen Litzi, a physical therapist based in New York City,

and today I'm answering the question of why do we have reflexes.

So for example, if you were in your kitchen and you put your hand over the stove and you didn't know it was on,

it would feel hot and you would automatically, without even thinking about it,

your hand would pull away.

That's a reflex.

Or if you're playing with your friends and someone throws a ball at you

...