NYTimes: The Science of Zzzzz’s

The Science of Zzzzz’s

With the global economy now taking more executives to far-flung places like Beijing and Mumbai, jet lag is becoming a bigger aggravation, leading sleep researchers to work harder than ever to find suitable remedies.

Trips to the other side of the globe make adjusting a traveler’s body clock — or circadian system — an even more drawn-out process. Jet-lag experts say they believe it takes one day for each time zone away from home, up to a maximum of six or seven days, to get fully in sync with local time.

On brief visits to China, as Dr. Abinash Virk of the Mayo Clinic pointed out, business travelers often have no recourse except to plunge into meetings without time to recuperate.

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