Psychology / Psych 0299 · Atom · ~20 seconds
Jet Lag
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State
Jet lag is the mismatch between the internal circadian rhythm and the local light-dark cycle after rapid travel across time zones.
Show
A traveler landing in a new time zone is fully alert at three in the morning local time for several nights.
Watch for
The tiredness is real and the cause is timing, not distance. Resynchronizing takes roughly a day per zone.