Jet lag, a disruption of the body's natural 24-hour internal clock, affects an estimated 60 to 70 percent of passengers who travel across multiple time zones. The condition can lead to fatigue, disorientation, and sleep disturbances, potentially impacting travel experiences.
Sleep expert Ashley Hainsworth emphasizes that proactive measures before departure can significantly ease the transition. For eastbound travel, Hainsworth recommends gradually shifting bedtime and wake-up times earlier in the days leading up to the flight, even by one or two hours. Conversely, for westbound journeys, adjusting to go to bed and wake up later can help prepare the body's internal clock.
During the flight, Hainsworth suggests napping for no more than 45 minutes at a time to gain energy without disrupting nighttime sleep. These naps should ideally be taken more than eight hours before the intended bedtime at the destination. To enhance sleep quality on the plane, Hainsworth advises bringing accessories such as earplugs, a travel pillow, and a blackout sleep mask. Listening to ambient sounds or white noise can also aid relaxation.
Remaining active during the flight is also encouraged. Experts advise against prolonged sitting, recommending regular movement to stretch legs, which can help prevent digestion issues, muscle stiffness, and potentially reduce the risk of blood clots. Compression socks can further aid circulation.
Upon arrival, managing light exposure is crucial for resetting the circadian rhythm. Spending time outdoors in natural sunlight after landing can help recalibrate the body's internal clock. Conversely, at night, avoiding bright indoor lights and electronic screens is recommended to signal to the brain that it is time to sleep.
Dietary choices can also play a role. While a morning coffee might be useful for an early flight, consuming caffeine later in the day can interfere with sleepiness. Alcohol is also identified as a significant sleep disruptor that can exacerbate jet lag symptoms. Both alcohol and caffeine can contribute to dehydration, making ample water intake essential throughout the journey.
For individuals seeking to reset their sleep schedule, melatonin supplements are an option, though their availability and regulation vary by country. In the UK, melatonin requires a prescription, while it is available over-the-counter in the United States. Consultation with a healthcare provider is advised before considering melatonin due to potential side effects and medication interactions.
Finally, Hainsworth suggests easing into the first day at the destination rather than over-scheduling. Activities like relaxing by the pool or exploring the local town can help the body adjust without causing further exhaustion. Arriving well-rested is presented as key to fully enjoying the remainder of a holiday.