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Article: Jet Lag
- Article from:
- Complete Human Diseases and Conditions
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Jet Lag
Jet lag is a disruption of the body
’
s internal biological clock that occurs when people cross time zones.
KEYWORDS
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Biological clock
Circadian rhythm
Jet lag is a common affliction that has surfaced in recent years. The body
’
s internal clock is
“
set
”
for the time zone in which a person lives. The light and dark schedule regulates many body functions, including when the body feels hungry and sleepy. In the past, when people traveled by train, ship, horse, or wagon, long-distance trips took months
—
more than enough time for the body to continually adjust its clock. Air travel ...