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Jet lag

Jet lag (aka "jetlag" or "jet-lag"), is a physiological condition which is a consequence of alterations to the circadian rhythm.

Such alterations result from shift work, transmeridian travel, or altered day length.

They are known as desynchronosis, dysrhythmia, dyschrony, jet lag, or jet syndrome.

Note:   The above text is excerpted from the Wikipedia article "Jet lag", which has been released under the GNU Free Documentation License.
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