Psychology / Unit 3 Psych 0299 short lesson, about 20 seconds
Jet Lag
Captions available
The idea
Jet lag is the mismatch between the internal circadian rhythm and the local light-dark cycle after rapid travel across time zones.
In practice
A traveler landing in a new time zone is fully alert at three in the morning local time for several nights.
Where people slip
The tiredness is real and the cause is timing, not distance. Resynchronizing takes roughly a day per zone.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
Something wrong in this lesson? Flag it · Sources for Psychology