Scientists Explained Why Jet Lag Is Worse When You Fly Eastwards

Many experienced travellers may have noticed that jet lag symptoms are always worse when you’re going to east. This phenomenon is actually confirmed by science.jet lag

Researchers from the University of Mayland’s Institute for Research of Electronics and Applied Physics published a new study aiming to understand why a flight cross-country from San Francisco to New York can feel worse than another way around. They created a new kind of model showing the brain’s “pacemaker” cells have a harder time heading to the east than to the west.

The sleeping cycle, or the body’s circadian rhythm, is controlled by a part of the brain called the suprachiasmatic nucleus. In this new study, researchers generated a mathematical model that helped describe how cells in this part of the brain respond to a rapid change in time zone. Essentially, when there is a rapid shift in daylight, for example, when a traveller is going east, in the opposite direction to the sun, the brain “pacemaker” cells cannot settle a rhythm appropriate to the new time zone. And that is causing symptoms of sleeping difficulties and daytime fatigue.

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