Opening A High Tech Front In The Battle Against Jet Lag

When flying Scandinavian Airlines System, watch for the matchbox-size "actographs" strapped to the legs of cabin attendants. The gadgets monitor the effects of crossing time zones by measuring changes in body movement. The goal is a better understanding of how to fight jet lag, a much-studied phenomenon with no easy cure. Because of jet lag's notorious effects, some companies won't let executives sign a contract for 24 hours after a transoceanic flight. And even that may not be long enough to restore mental acuity.

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