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

Jet lag isn’t a result of flying but rather a result of changing time zones, and a 15 hour flight can take you through many more time zones than a 20 hour train ride can because planes are much faster.