Jessica Wynn

We have dominant eyes.

feet, sides we chew on, which nostril we're breathing out of.

And they don't always favor the same side, right?

It's not random chaos.

It's evolution's way of saying, hey, let's specialize here.

Yeah, I mean, we think so.

I mean, there's definitely some things in lefty fine print.

It's very early on in the research.

But left handed people tend to hit puberty later than their peers.

There was a study that showed left handed boys reached puberty about a year later than their right handed peers.

More studies are needed on this, though.

That's because you're left handed.

There's another weird biological fact.

And this isn't just a left handed phenomenon.

It's true for both right and left handed people.

Whichever is your dominant hand, your nails grow faster on that hand.

Yeah, I know.

I've been checking it out since I read that.

And there's less fun facts, too.

I mean, according to a few studies, left-handers have a higher chance of developing immune disorders and conditions such as allergies.