Mental Health

Why Do We Experience Jet Lag?

By Dynne C. | Update Date: Apr 12, 2024 04:22 AM EDT

Jet lag is a common phenomenon experienced by travelers when their internal body clock is out of sync with the time zone they are in. This disruption can lead to feelings of fatigue, sleepiness during the day, difficulty concentrating and even digestive issues. 

Jet lag occurs when traveling across multiple time zones, disrupting the body's circadian rhythm, also known as the internal body clock. This clock regulates various bodily functions, including sleep-wake cycles, hormone production and metabolism. When a person rapidly changes time zones, their internal clock struggles to adjust to the new schedule, resulting in symptoms of jet lag.

Effects on the body

The symptoms of jet lag can vary depending on factors such as the number of time zones crossed, the direction of travel, and individual differences in tolerance. Common symptoms include fatigue, insomnia, irritability, difficulty concentrating and gastrointestinal discomfort. These effects can impact both leisure and business travelers, reducing productivity and enjoyment during trips.

Factors influencing jet lag

Several factors influence the severity of jet lag experienced by travelers. The direction of travel plays a significant role, with eastward travel typically causing more severe symptoms than westward travel. This is because traveling east disrupts the body's natural tendency to extend the day, making it harder to adjust to earlier bedtimes. 

Additionally, other factors such as age, overall health and individual circadian rhythm variations can affect how quickly someone adapts to a new time zone.

Minimizing jet lag

While it may be impossible to completely avoid jet lag, there are several strategies travelers can use to minimize its impact. Gradually adjusting sleep schedules before departure, staying hydrated during the flight and exposing oneself to natural sunlight upon arrival can help reset the body's internal clock more quickly. 

Some travelers also find relief from over-the-counter or prescription sleep aids, although these should be used cautiously and under the guidance of a healthcare professional.

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