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  • Well wouldn’t you know it -- it's 3 AM, and the city outside the window is sound asleep.

  • You, on the other hand, are hyper, hungry, and a bit restless.

  • Is it insomnia that's keeping you awake?

  • Nope, it's something totally different - jet lag!

  • And one of the biggest jet lag mysteries is why on Earth it's worse when you fly east?

  • Jet lag happens when you cross several time zones while traveling from west to east or

  • vice versa.

  • It's hard for your body to align its internal clock to a new time zonethat's why you

  • experience all kinds of annoying symptoms, from headaches to a loss of appetite.

  • Your meal and sleep schedules are all messed up, you feel lively at night and groggy during

  • the day...

  • Ugh!

  • Shall I keep going?

  • Almost every airline passenger has experienced jet lag at least once during their traveling

  • career.

  • And still, there are lots of myths surrounding this bothersome phenomenon!

  • - For example, many people believe that the reason for jet lag is a mere lack of sleep.

  • But jet lag has more to do with your body clock being used to the light/dark cycles

  • of your home time zone.

  • That's why it gets terribly confused when you reach a destination with a totally different

  • light/dark cycle.

  • - "To fight jet lag and arrive someplace as fresh as a daisy, just take a good sleeping

  • aid."

  • Sorry, folks, it doesn't work this way.

  • There's no magic way to deal with jet lag once and for all because, again, it's not

  • only about sleep.

  • Plus, flight attendants could tell you a story or two about the unpleasant outcomes of passengers

  • taking something to try to sleep.

  • - There's a misconception that red-eye flights (those departing at night and arriving in

  • the morning) help you cope with jet lag better.

  • Trust me, if you aren't a lucky first-class passenger, your bed will win in the competition

  • with an airplane seat, hands down.

  • Better take a day flight and have a nap after you land - you'll have more strength to combat

  • jet lag.

  • - "Jet lag can hit you no matter where you're going."

  • Um, not really.

  • If you fly south to north or the other way (meaning you stay in the same time zone),

  • jet lag won't be an issue.

  • Sure, if it's a 10-hour-long flight, you're bound to feel tired, dehydrated, and kinda

  • numb all over your body.

  • But all this will pass after a good night's sleep.

  • Flying from east to west and vice versa is another story.

  • Such journeys DO lead to jet lag, and this condition is no joke.

  • Regular flyers know for sure that it takes much longer to recover after traveling east

  • than when you're heading west.

  • This paradox had remained unsolved until physicists cracked the mystery!

  • They used a mathematical model which demonstrated that particular brain cells (called neuronal

  • oscillator cells) react differently depending on whether you're traveling west or east.

  • These are the very cells that regulate your circadian rhythmyour 24-hourinternal

  • clockthat’s responsible for your sleep-wake cycle.

  • When you travel to a place with a time zone different from your home one, the cells can't

  • get used to this new environment fast enough.

  • Displeased, they revolt by messing up your sleep pattern, metabolism, and many other

  • bodily processes.

  • This turmoil lasts for at least a few days after your relocation.

  • But let's return to the question of why flying east tires you more.

  • When you fly westward across several time zones, you'll automatically make your day

  • longer because it'll be earlier at your destination than at home.

  • Flying eastward will shorten your day because when you arrive, it'll be later than in the

  • time zone you left.

  • Those neuronal oscillator cells follow a cycle that's actually about 30 minutes longer than

  • 24 hours.

  • That's why it makes it easier for you to extend the length of your day than to shorten it.

  • Those physicistsmathematical model has proven this.

  • It showed that if you travel across 3 time zones heading westward, you'll be totally

  • fine in 3 days or so.

  • After flying across 6 time zones, you'll need about 6 days to recover.

  • If you're going east, though, it'll take you at least 4 days to adjust to the new environment

  • after crossing 3 time zones.

  • For 6 zones, the recovery time will extend up to 8 days!

  • By the way, some people deal with jet lag better than others - all thanks to their natural

  • brain cell cycle.

  • It varies from person to person.

  • While you may have a 24.5-hour circadian rhythm, other people's rhythms can be shorter or longer.

  • It's the difference between your brain cell cycle and 24 hours that determines how bad

  • your jet lag will be.

  • The researchers have created this time-zone theory based on their knowledge about the

  • human brain.

  • They haven't tested it experimentally yet, but when they do, it'll hopefully help travelers

  • better deal with that post-flight lag.

  • Make sure to tell me what you do to get over jet lag down in the comments!

  • As for me, I have some of my own tricksplus what the experts recommend.

  • Even if you can’t avoid it altogether, at least you can make it more bearable!

  • - Get a good rest and plenty of sleep before your trip.

  • Pre-flight stress and late-night packing will wear you down and make your jet lag worse.

  • - Cut down on caffeine - not right before your flight, like most travelers do, but 12

  • to 24 hours in advance.

  • It'll prevent your body from getting overstimulated, and you'll fall asleep at a reasonable hour

  • in a new time zone.

  • - If you're going to have a night flight and sleeping on a plane is a problem for you,

  • prepare for the journey in advance.

  • Pack a sleeping mask, neck pillow, and earplugs, and wear comfortable clothes.

  • - Try to move as much as you can before and during your flight.

  • Staying in one place for a long time will make your shoulders, hips, and back feel tight.

  • A deep lunge or a squat here and there, stretching your arms overhead - you'll feel much better!

  • - Figure out whether you should sleep on the plane or not before your flight.

  • It all depends on the local landing time.

  • If you arrive in the evening, sleeping on board can lead to a restless night and ruined

  • first day.

  • If it's morning when you arrive, it's better to have at least a nap on the plane - then

  • you'll be more or less fresh when you reach your destination.

  • - Drink lots of water.

  • Proper hydration will help your body adapt to a new time zone faster.

  • You can also snack on water-rich foods like berries, tomatoes, celery, or cucumbers.

  • - As soon as you land, start moving.

  • However impossible it may sound, a workout will get your circadian rhythm back on track.

  • - Adjust the temperature in your room so that it's a bit on the cool side.

  • It'll help you fall asleep faster and have better sleep quality.

  • Also, remember to keep your room pitch dark: it'll boost the production of melatonin - the

  • hormone responsible for the sleep-wake cycle.

  • By the way, few people know that flying isn't the only cause of jet lag.

  • Let's say you follow a totally different schedule on your weekdays and on the weekend.

  • Then your internal clock can also fall out of sync.

  • This phenomenon even has its own name - "social jet lag"!

  • Now imagine going to bed at 2 AM and waking up at 11 AM on Saturday while you're usually

  • asleep from 11 PM to 6 AM on workdays.

  • No wonder it can lead to a confusing mismatch between your internal ticker and the real

  • time!

  • Jet lag might spoil the first few days of your vacay, but it can also get you some of

  • the best travel experiences!

  • Being fresh and energetic, you can have a late-night excursion and admire the city lights.

  • Or it won't be an issue for you to wake up super-early to see a breathtaking sunrise.

  • Just go with the flow and, well, look on the Bright Side!

  • And if you learned something new today, then give the video a like and share it with a

  • friend!

  • Here are some other cool videos I think you'll enjoy.

  • Just click to the left or right, and, like I said, remember to stay on the Bright Side

  • of life!

Well wouldn’t you know it -- it's 3 AM, and the city outside the window is sound asleep.

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B1 中級

這就是為什麼時差在東飛時更嚴重的原因。 (That's Why Jet Lag Is Worse When You Fly East)

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    林宜悉 發佈於 2021 年 01 月 14 日
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