Our biological clock is usually synchronised with local time so that we feel hungry in the morning and sleepy in the evening.

Jet lag is a common condition that sometimes occurs after long distance flights. It is the result of your body finding it difficult to adjust to a new time zone.

Jet lag can disturb your sleep pattern and make you feel drowsy and lethargic (lacking in energy). Jet lag often becomes more severe as more time zones are crossed.


The symptoms of jet lag include: 

• Fatigue 

• Sleepiness 

• Digestive upsets 

• Memory lapses 

• Irritability 

• Apathy.

Prior to Travel 

Stay that way. In other words, long before you embark, continue to exercise, eat right, and get plenty of rest. Your physical stamina and conditioning will enable you to cope better after you land. 

Get medical advice 

If you have a medical condition that requires monitoring (such as diabetes or heart disease), consult your physician well in advance of your departure. 

During Travel

During the flight, you should:

• Drink plenty of fluid - And Limit caffeine consumption .

• Keep active - if you are flying long distances, walk around the cabin occasionally and regularly stretch your arms and legs when you are sitting down. 

• Change your watch when you board the plane so that it matches the time of your destination. 

• Get some sleep - if it is night time at your destination, try to get some sleep. You may find ear plugs or eye masks useful. 

On Arrival at the Destination

• Adapt to the local schedule as soon as possible. However, if the travel period is 2 days or less, travelers should remain on home time. 

• Optimize exposure to sunlight following arrival in either direction. 

• Eat meals appropriate to the local time.


The body needs anywhere from a few days to a few weeks to acclimatise to the new time zone – approximately one day for each hour of time zone changes.