Jessica Wynn

I will say it is why everyone shakes hands with their right hand.

That and shaking with the right hand is, you know, it's an old school peace signal.

Yes.

And the right hand was the weapon hand.

So offering it meant, look, you know, no dagger.

And the up and down shake part is basically a medieval TSA check to make sure nothing pops out of your sleeve.

Oh, God, yeah, definitely.

I mean, in parts of India and the Middle East, it's still considered rude to eat or handle food with your left hand because it's associated with hygienic duties.

Right.

If you travel internationally, you'll definitely want to be mindful of what hand you're using, for sure.

It seems to be, at least for some people.

I mean, my experience has left me ambidextrous.

Admittedly, I don't write with pen and paper as much anymore.

But before phones and laptops, I'd switch hands while writing without even noticing.

But beneath all of this, the brain's wiring drives a lot of it.

Left-handed people are shown to have a larger corpus callosum.

The bridge that connects the two hemispheres of our brain.

So lefties often have a larger one, which means faster communication between both sides.

Sure.

Sure.