East or West: Which Way Has the Worst Jet Lag?
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If you have ever suspected that, when you travel east, you suffer from more intense jet lag, you wouldn’t be wrong. Travel + Leisure has posted an article that details new research that confirms the theory.
“Basically, what we show is this eastward-westward asymmetry ... comes from the fact that your [circadian rhythms] have a natural period that is a little longer than 24 hours,” associate professor Michelle Girvan told Travel + Leisure.
Authors of the study found that a person’s internal clock and the number of time zones you travel through, factor into jet lag, not just how far you travel.
“You expect to advance your internal clock if you travel east and backward if you travel west,” Girvan added. "However, if you travel a large number of time zones eastward, your internal clock doesn’t phase advance like you would expect. Instead, it phase delays.”
So basically, mathematically speaking, you should feel more jetlagged when you travel east. Here is some more in-depth analysis on why.
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