Brian Lairer on WNYC. To close out several of our shows this week, we're talking travel

tips with a travel expert. It's Brian Kelly, who founded the travel website, The Points Guy, in 2010.

His work focuses on finding the best travel deals and specifically how to leverage credit card

points for travel while not overspending. In his new book, How to Win at Travel, he provides a broad

range of advice, everything from budgeting for travel to handling

flight anxiety and what to do if your flight is delayed or canceled. So we're taking advantage

of his knowledge on a few different things this week. So far, we've talked about how to book the

best deal, how to handle some things that can go wrong. That was yesterday. And we continue now with how to stay healthy when traveling. And how to handle some things that can go wrong that was yesterday. And we continue now with how to stay healthy when traveling and how to manage fear of flying.

Brian, welcome back to WNYC.

Thanks for having me.

Jet lag.

What is jet lag?

It's not just fatigue and sleeplessness, right?

Jet lag is caused by your circadian rhythm, which regulates

everything. When you wake up, when all of your major bodily functions, function. And so jet lag can

have a lot of different effects. Mostly we notice, you know, waking up at weird hours of the night.

And this can really be a drag on a trip. I know the worst

jet lag by studies is New York to Tokyo. And it's generally one hour per day for each hour

of time change. So if you're going somewhere like Asia, that's 12 hours difference, you're going

not naturally adjust for 12 days

and now most people will be getting ready to leave or have come home before they were fully adjusted

so and the biggest factor of jet lag is controlling light so our eyes have two functions number one to

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