 As someone who travels for work as much as I do, I can tell you it's a very real thing. In my 20 plus years as a journalist, I've come to find out that it just doesn't make sense to try and adjust your internal clock on quick trips. But on longer ones, experts we talked to had this advice. First of all, if you can, start gradually adjusting your sleep and your wake times by an hour or two a day before your trip.