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

Yeah, a 20 hour train ride (unless someone built a super long high speed train) very likely takes you 2-3 time zones at most. It is possible to be a bit “time lagged” but since you also had 20 hours to adjust while sitting on the train, most people would probably recover quickly or not notice it at all.