Jet lag (desynchronosis) is a physiological condition caused by alterations to the body's circadian rhythms resulting from rapid long-distance transmeridian (east–west or west–east) travel on a (jet) aircraft. It was previously classified as one of the circadian rhythm sleep disorders.

The condition of jet lag may last several days until one is fully adjusted to the new time zone, and a recovery rate of one day per time zone crossed is a suggested guideline. The issue of jet lag is especially pronounced for airline pilots, crew, and frequent travelers. Airlines have regulations aimed at combating pilot fatigue caused by jet lag.

The common term jet lag is used because before the arrival of passenger jet aircraft, it was generally uncommon to travel far and fast enough to cause jet lag. Propeller flights were slower and of more limited distance than jet flights, and thus did not contribute as widely to the problem.

Related categories 1

Gorp: Beating Jet Lag
Article discussing methods to overcome jet lag quickly such as drinking water, exercise and rest.
Jet Lag Rooster
A calculator helping one adjust their sleep schedule to the new time zone before travel. The method is based on light exposure and melatonin.
Lumie
Explains how to reset your body clock by following a carefully timed program of light and dark. The site calculates the timing for different time zones.
No Jet Lag
Definition, description and retailers of a homeopathic jet lag remedy.
Remedy Health Media: Jet Lag
An explanation of jet lag, symptoms, causes and management as well as a discussion of circadian rhythms.
Wikipedia: Jet Lag
Definition, cause, symptoms and management of jet lag.
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October 29, 2015 at 16:05:12 UTC
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