Is jet lag worse going to or from America?

Scientists have posited that the asymmetry of jet lag—the increased impact that results from eastward travel compared to westward—is connected to the fact that human circadian rhythms, on average, extend slightly beyond 24 hours.



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Jet lag is worse and longer-lasting when you travel east than west.

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Most people find that jet lag is worse when traveling east than it is when traveling west. View Source . Jet lag differs based on the direction of travel because it's generally easier to delay your internal clock than advance it. Jet lag does not occur on north-south flights that do not cross multiple time zones.

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So, world travelers, do you find jet lag worse coming or going? Coming home, with 9 hour time difference, is the worst for us. After 6 weeks in Europe this fall, it took me 7 nights before I could sleep 8 hours even if I was in bed by 8pm.

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Sleep Foundation notes that jet lag happens when we travel across three or more time zones. And, there's bad news for anyone traveling from the U.S. to Europe: jet lag is worse when you travel east than it is when you travel west.

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So, for that New York to London flight we mentioned earlier, you'd be crossing five time zones, so it could take you about five days to adjust. However, research in rodents suggests the liver, lungs, and muscles can take nearly six times as long as the SCN to adjust to jet lag.

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Try adjusting to local time as soon as possible. Remain active and wait for a normal bedtime before falling asleep. If you do nap only do so for 30 minutes, any longer will make your jet lag worse. If it's daytime when you arrive at your destination, spend as much time outside as you can.

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Common ways pilots avoid jetlag is staying hydrated, good rest, avoiding caffeine and alcohol, exercising, or sleeping on the airplane. For long-haul flights airlines use multiple pilots for the flight to allow each pilot to get some rest. The more time zones that are crossed, the worse the jet lag.

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A jet lag rule of thumb says it normally takes one day per time zone to get back to “normal” (flying west to east). That means, after a nine-hour time change on a flight from the US west coast to Germany, you'll need nine days before your body fully adjusts to Central European Time.

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If you have the choice, try to book a flight that leaves between 8 am and noon and arrives between 6 pm and 10 pm. According to this book, flights that leave late at night (10 pm-1 am) and arrive in the morning (8 am to noon) give a much bigger risk for jet lag.

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Adjust your sleep-wake schedule: Getting on the sleep-wake schedule at your destination quickly may help with jet lag symptoms. Focus on getting quality sleep: Sleeping on the plane, if you can, may help your body adjust faster to a new time zone.

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Try to Sleep During the Flight
One of the best ways to minimize jet lag is to try and sleep during the flight. Using earplugs, eye masks, or noise-cancellation headphones helps to block out light and noise.

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If you need it, taking a short nap can help you stay awake during the day. But napping for more than 30 minutes can keep you from falling asleep at night. Try to stay awake until your normal bedtime and get up on time the next day.

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17 easy ways to avoid jet lag on your next long haul flight
  1. Don't scrimp when booking your seat. ...
  2. Start adjusting your regular bedtime. ...
  3. Have a quiet night in. ...
  4. Don't spend too long in the airport bar or cafe. ...
  5. Eat light. ...
  6. Keep on your feet. ...
  7. Wear comfortable clothes. ...
  8. Stay hydrated.


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How to survive a long-haul flight: 10 proven tips
  1. Find comfortable clothes to wear on long flights. ...
  2. Reserve a good seat. ...
  3. Prepare yourself for sleep. ...
  4. Don't pack too much in your cabin luggage. ...
  5. Take your own snacks. ...
  6. Move around the plane. ...
  7. Stay hydrated. ...
  8. Relax!


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Flying east or west makes a difference to jet lag Your circadian rhythm (body clock) is less confused if you travel westward. This is because travelling west 'prolongs' the body clock's experience of its normal day-night cycle (the normal tendency of the body clock in most of us is slightly longer than 24 hours).

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Try out these tips – most of which have the benefit of being completely natural:
  1. Start adjusting light exposure before your trip to decrease the length of time you will feel jet lagged. ...
  2. Consider taking melatonin supplements if you're traveling east. ...
  3. Time your flight. ...
  4. Try to sleep during your flight.


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Limit naps in the days following your arrival. If you need it, taking a short nap can help you stay awake during the day. But napping for more than 30 minutes can keep you from falling asleep at night. Try to stay awake until your normal bedtime and get up on time the next day.

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Adjustment to a new time zone is harder when traveling east than traveling west. This is because you “lose” time and you end up trying to fall asleep when your body is actually waking up.

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