Skip to main content


Jet lag is the disruption of sleep patterns which occurs when you travel between time zones on long-haul flights. Jet lag is most severe on daytime flights traveling from west to east. 

Every cellular system in the body works on a 24-hour cycle and in accordance with signals sent from the brain. A change in time zones can disrupt this balance. Passengers traveling between time zones are likely to experience jet lag and a disruption to sleep patterns. 

Precautions you can take before flying 

  • Relax before traveling, eat healthily and strengthen your immune system. 
  • Be sure to get plenty of sleep before flying and do not leave preparation until the last minute. 
  • One day before traveling, set your watch to the local time of your destination. 
  • Before traveling east, try to get up earlier for a few days. If you are traveling west, go to bed a little later and sleep a little longer in the mornings. 

Precautions you can take while flying 

  • Try to stay awake on the plane. To stay awake, drink plenty of fluids and eat foods rich in protein. Cheese, fish, meat, eggs and dairy are good choices. 
  • Eat light to reduce the effects of jet lag. 
  • Drink plenty of water while flying to avoid dehydration. 
  • Avoid caffeine, carbonated drinks and alcohol. 
  • Take a vitamin C supplement. 
  • Take a little exercise while on-board to promote circulation. 

Precautions you can take after flying 

  • If you arrive at night, try to sleep even if you are not tired. 
  • Be exposed to as much daylight as possible. 
  • Drink herbal tea to aid sleep. 
  • Do not take sleeping tablets. 
  • Try to exercise. 

Precautions you can take on your journey home 

  • Do not forget that jet lag can affect you in both directions of travel. In fact, the potential for jet lag can be even greater on your way home.
  • Try not to sleep on your return flight. 
  • Try to resist sleeping when you arrive home. Try to sleep at your normal bedtime. 
  • Do not consume anything which might interrupt your sleep up to five hours before going to bed. 
  • Be sure to move around and get your circulation going. 
  • Try to sleep. If you cannot sleep, do something which does not require much energy, like reading in low light. 
  • Do not forget that jet lag is only temporary.

Please read our related topic:

Gas and swelling

We recommend that you take a few measures to make sure you enjoy a comfortable flying experience. If you would like to know more about a particular topic, please contact our call center.