Fighting off jet lag
Jet lag refers to disturbed sleep patterns, weakness and disorientation caused by travelling. It happens when your normal body clock is disrupted by travelling through several time zones.
It’s worse when you move from west to east because the body finds it harder to adapt to a shorter day than a longer one.
Our body clock is primed to respond to a regular rhythm of daylight and darkness. It is thrown out of sync when it experiences daylight at what it considers the wrong time and it can take several days to readjust.
Travellers who take medication according to a strict timetable (such as insulin or oral contraceptives) should seek medical advice from a health professional before their journey.
Before you travel
Make sure you’re fully rested before you travel. If you’re flying overnight and you can get a bit of sleep on the flight, it will help you to stay up until night time once you arrive at your destination.
Change your sleep routine
A few days before you travel, start getting up and going to bed earlier (if you’re travelling east) or later (if you’re travelling west). During the flight, try to eat and sleep according to your destination’s local time.
Have a stopover on the way
Including a stopover in your flight will make it easier to adjust to the time change and you’ll be less tired when you arrive. Take advantage of any short airport transits to have a refreshing shower.
During your journey
Dehydration can intensify the effects of jet lag, especially after sitting in a dry aeroplane cabin for many hours. Avoid alcoholic and caffeine drinks (such as coffee, tea and cola) which can disturb sleep.
Preparing for sleep
During your flight, try to create the right conditions when preparing for sleep. Eyeshades and earplugs may help you sleep. Regular exercise during the day may also help you sleep but avoid strenuous exercise immediately before bedtime.
At your destination
Try to get as much sleep in every 24 hours as you normally would. A minimum block of four hours’ sleep during the local night – known as “anchor sleep” – is thought to be necessary to help you adapt to a new time zone. If possible, make up the total sleep time by taking naps during the day.
The cycle of light and dark is one of the most important factors in setting the body’s internal clock. Exposure to daylight at the destination will usually help you adapt to the new time zone faster.