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LONDON (AP) — It’s the bane of many travelers: jet lag. Nobody wants to lose out because they’re too tired to enjoy the delights of their vacation spot. Here are some tips on how to handle jet lag, wherever you might end up.

What is jet lag? Scientists define jet lag as the effect on the human body of traveling across different time zones. Our bodies have biological clocks programmed into almost every cell in the body, according to Sofia Axelrod, who studies circadian rhythms at Rockefeller University in New York. “The clock is set by the 24-hour light and dark pattern,” Axelrod said.



“Every morning when we wake up, specialized (light) receptor cells in our retina receive a daylight signal, which is transmitted to the brain and from there, the whole body.” When we travel to another time zone, our eyes receive the daylight signal at a different time than usual, causing our internal clocks to reset. But that process can take awhile — and it’s during that adjustment period that we feel the effects of jet lag.

Is jet lag preventable? Yes, but that can come at a cost. Malcolm von Schantz, a professor who specializes in circadian rhythms at Northumbria University in Newcastle, said that flying in premium cabins where travelers can stretch out and properly rest, can ward off sleep deprivation, but he acknowledges that isn’t an option for most people. Still, he said that timing your flights can help.

For example, he suggests flying from Europe to North America dur.

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