TravelJet Lag: Dealing With the Messy, Chaotic Biology of Crossing Time ZonesCrossing the world within hours comes with a toll—a reminder that the human body keeps its own time regardless of the clock in the airport.SaveMark Us Preferred on GooglePrintCrossing multiple time zones can leave even the most seasoned traveler with jet lag. PeopleImages/ShutterstockEric Lucas2/18/2026|Updated: 2/23/20260:00X 1Jet lag is an ugly thing.Jet lag is for weaklings.We had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.