Welcome to Chasing Life. Around the world, more than 40% of people suffer from headaches.

It's a real problem. We're talking 3.1 billion people around the world who miss work.

They miss school. They miss some of life's biggest moments because of headaches.

This throbbing pain that occurs in their head behind their eyes,

sometimes on one side, sometimes on the other, it can be really, really confusing for people.

They can appear out of nowhere, and they can be really, really disabling, tough to diagnose,

and then tough to treat. So today, we're talking to Dr. Alexander Moskopp. He's author of the book called

The End of Migraines, and he's the founder and director of the New York Headache Center. He's going to tell

us why headaches hurt, what's really happening in your head, and what you can do about it. Again,

this affects a lot of people. I'm Dr. Sanjay Gupta,

CNN's chief medical correspondent,

and this is chasing life.

There are those who have the edge with 5G plus on EE,

and others? Not so much.

Those who can download a kids film

while boarding a plane

or those who can't.

Those who book the only taxi nearby

or those that are like.

We're going to have to walk, Sarah.

Stay one step ahead

when you get the edge

...