NASA astronaut Mike Massimino gives Travel + Leisure the best tips on how to avoid jet lag.

It’s not exactly a secret that here atTravel + Leisurewe’re big fans of flying.

Something we’re not fans of?Jet lag.

Young adult sleeps during air travel on commercial plane with headphones in

The Everest/Getty Images

So, jet lag was not allowed.

They really got into the science behind it," he reiterated.

“It’s a timing issue to reset your circadian clock.

Here are a few quick tips from Massimino on how to avoid jet lag.

Understand when you should see light and when you shouldnt.

It’s a timing issue to reset your circadian clock.

And theres plenty of science to back this up.

AsScientific Americanexplained, light exposure can assist someone in either advancing or delaying their circadian rhythm.

Curb your caffeine intake and think about when to take melatonin.

The Mayo Clinic adds thatwhenyou take melatonin matters.

Download the Timeshifter app and let it do the work for you.

Easy, Massimino said.

There’s an app for that and he helped build it.

In my opinion, the best thing to do is use the app.

[Its] so easy., Massimino said.

Download the Timeshifter apphere.