How Long Does it Take to Get Over Jet Lag and Why Is Jet Lag Worse Coming Home

Jet lag, the unwelcome companion of the long-distance traveler, can leave us feeling disoriented and exhausted, a prisoner of time zones we’ve left behind. Yet, in this globalized age, it’s a burden we bear as we chase sunsets and sunrises across continents.


But how can we conquer this temporal tyrant? And why does the journey home seem to stretch the boundaries of fatigue to its limits?

Understanding the Clock: What Is Jet Lag?

Jet lag is not a figment of the our imagination but a real, physiological condition born from the disruption of our circadian rhythm—a natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Kiribati island country with the worlds earliest time zone


When we travel across time zones, particularly over three or more, our internal clock is suddenly out of sync with the local time. This misalignment manifests as jet lag, with symptoms ranging from fatigue, insomnia, and difficulty concentrating to digestive problems and mood swings.

Why Is Jet Lag Worse Coming Home?

Whether or not jet lag is easier or worse coming home depends on what direction you are traveling. Jet lag can be more challenging when traveling east compared to traveling west. Let me explain. The reason is related to how our internal body clocks, or circadian rhythms, align with the local time at our destination.

Traveling East:

  • When you travel east, you essentially shorten the day. For example, if you fly from New York to London, you are moving ahead in time.
  • Your body clock has to adjust to an earlier time zone, which generally means you have to advance your sleep schedule. This shift is harder for most people because it’s generally easier to delay sleep (as in traveling west) than to advance it.
cape byon in australia
Cape Byron in New South Wales, Australia

Traveling West:

  • When you travel west, you lengthen the day. For instance, if you fly from New York to Los Angeles, you are moving back in time.
  • Your body clock has to adjust to a later time zone, which means delaying your sleep schedule. This is often easier because it's typically more natural to stay up later than to go to bed earlier.


The mystery of why jet lag often feels more intense on the return leg of a journey can be unraveled by understanding the mechanics of our circadian rhythm. Traveling eastward—where we "lose" hours—tends to exacerbate jet lag more than westward travel, where we "gain" hours.


Our bodies are naturally inclined to extend the day, making it easier to adapt to westward travel. However, when we return home from an eastward journey, the sudden need to "shorten" our day can wreak havoc on our biological clock.

time zone travel adjustment time


But there’s more to this than just science. The emotional weight of returning to the demands of daily life, coupled with the physical toll of travel, can make the symptoms of jet lag more pronounced.

After the excitement of a trip, coming home often brings a psychological slump—an abrupt transition from the freedom of exploration to the routine of responsibility. This mental state can amplify the physical effects of jet lag, making the return journey seem much harder.

Quick Tips to Overcome Jet Lag: A Traveler’s Guide

While jet lag is an inevitable part of long-distance travel, there are strategies to minimize its impact. Here are some practical tips to help you recover quickly and get back to your normal routine:

1. Gradually Adjust Your Sleep Schedule Before You Travel

Milford Sound in Fiordland National park in New Zealand
New Zealand is 16 hours ahead of NC—an extreme time difference, but worth the jet lag!

One of the most effective ways to reduce the impact of jet lag is to gradually adjust your sleep schedule a few days before your departure. If you’re traveling east, try going to bed an hour earlier each night. If you’re heading west, do the opposite. This can help your body start to adjust to the new time zone before you even leave home.

2. Stay Hydrated

Dehydration can worsen the symptoms of jet lag, so it’s essential to drink plenty of water before, during, and after your flight. Avoid alcohol and caffeine, as these can further dehydrate your body and disrupt your sleep patterns.

3. Get Plenty of Natural Light

Exposure to natural light is one of the most powerful tools for resetting your circadian rhythm. Spend time outside during the day, particularly in the morning, to help your body adjust to the new time zone. If natural light isn’t available, consider using a light therapy box to simulate sunlight.

4. Take Short Naps Wisely

While it might be tempting to take long naps during the day, this can make it harder to adjust to the new time zone. Instead, opt for short naps of 20-30 minutes to help reduce fatigue without interfering with your ability to sleep at night.

Airport chairs for waiting on plane
An empty row of chairs transforms into the perfect nap spot between flights

5. Avoid Heavy Meals and Caffeine Close to Bedtime

Heavy meals and caffeine can disrupt your sleep, making it harder for your body to adjust to the new time zone. Stick to light, healthy meals, and avoid eating or drinking anything that might keep you awake in the hours leading up to bedtime.

6. Consider Melatonin Supplements

Melatonin is a hormone that helps regulate sleep. Taking melatonin supplements can help signal to your body that it’s time to sleep, making it easier to adjust to the new time zone. Make sure you consult with your healthcare provider before using melatonin though, as it’s not suitable for everyone.

Jet Lag Symptoms

Jet lag can affect you in various ways, but some of the the top symptoms include:

Place Royale Quebec Canada
Place Royale in Quebec, Canada
  1. Fatigue and Sleep Disturbances: Difficulty falling asleep or staying asleep, as well as waking up too early or feeling excessively tired during the day, is common. You might also experience restless or poor-quality sleep.
  2. Difficulty Concentrating: You may find it hard to focus, think clearly, or remember things. This cognitive impairment can affect work performance and daily activities.
  3. Mood Changes: Irritability, anxiety, or mild depression are frequent emotional symptoms. The disruption to your routine and sleep schedule can affect your mood and overall emotional well-being.
  4. Digestive Problems: Symptoms such as constipation, diarrhea, or an upset stomach can occur as your digestive system adjusts to a new time zone and eating schedule.
  5. Physical Discomfort: Headaches, muscle aches, or general feelings of discomfort can also be experienced. This can be related to changes in sleep patterns, dehydration, or stress.

These symptoms typically resolve as your body adjusts to the new time zone, though the duration can vary depending on the number of time zones crossed and individual differences.

Bed with pillows
Sometimes all you need is a good night's sleep!

The Role of Routine in Beating Jet Lag

Returning home after a trip can be jarring, and jet lag only adds to the challenge. One of the best ways to ease the transition is to get back into your regular routine as quickly as possible. This includes returning to your usual sleep schedule, eating habits, and daily activities.


The familiarity of your regular routine helps signal to your body that it’s time to return to normal, making it easier to overcome the lingering effects of jet lag.

General Tips:

  • Rule of Thumb: It typically takes about one day to recover for each time zone crossed. For example, if you travel across 5 time zones, expect it to take about 5 days to fully adjust.
  • Morning vs. Evening Light: Exposure to morning light is beneficial when adjusting to an earlier time zone (eastward travel), while exposure to evening light helps when adjusting to a later time zone (westward travel).

Typically, one time zone is designed to represent a one-hour difference from the adjacent time zone. Time zones are generally 15 degrees of longitude wide, as the Earth rotates 360 degrees in 24 hours, resulting in 24 time zones, each representing one hour of the Earth's rotation.

Sunset in Howth Ireland
Amazing sunset in Howth, Ireland! My picture sure didn't do it justice!

When to Seek Medical Advice

While most people recover from jet lag within a few days, some may experience more severe symptoms that persist longer. If you’re struggling with jet lag for more than a week, or if the symptoms are significantly impacting your daily life, it may be worth seeking medical advice.


Jet lag is a small price to pay for the enriching experience of travel. By understanding the causes and implementing effective strategies, we can minimize its impact and make the most of our adventures. Whether you're exploring new horizons or returning to the comforts of home, remember that with a bit of planning and self-care, you can conquer jet lag and fully enjoy the journey.

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