Jet lag

Jet lag is a temporary sleep disorder that occurs when someone travels across different timezones, disrupting their internal body clock or circadian rhythm. Its symptoms include fatigue, insomnia, irritability, digestive issues, and difficulty concentrating.

It typically takes about one day to adjust for each time zone crossed. For example, crossing six time zones may require up to six days for the body to adapt fully. The sudden shift between time zones affects the production of melatonin, a hormone that promotes sleep, making it harder to fall asleep or stay awake at the appropriate times.

Here are various steps travelers can take to prevent or reduce jet lag.

• Adjust sleep schedules a few days before departure to align with the destination’s time zone;
• Stay hydrated, avoid alcohol and caffeine, and move around periodically during the flight;
• Take in natural sunlight upon arrival and avoid naps to help reset the body clock; and
• Optionally, use melatonin supplements or sleep aids to regulate sleep patterns.

Jet lag is a common concern and experience for business travelers and frequent flyers who often cross multiple time zones and deal with long-haul flights for work.