Eli5: how can a 14-15 hours flight trip can make you feel jet lagged but even a long 20 hours train journey doesn’t have the same effect?

Question

Is it because typically during these long flights there is a a change in multiple time zones and that messes your circadian rythm?

In: 541

Answer 1

It’s the combination of timezones and the rate at which you’re travelling. If you travel slowly enough, you’re constantly adjusting to the changes, but zooming at nearly 600mph for hours, you’re throwing your circadian rhythm out of whack.