Question 1

What is jet lag?

Accepted Answer

Jet lag is a temporary sleep disorder that occurs when your body's internal circadian rhythm (biological clock) is out of sync with the local time zone you've traveled to. It happens when you cross multiple time zones quickly, causing symptoms like fatigue, insomnia, difficulty concentrating, and digestive issues.

Question 2

How do you calculate jet lag?

Accepted Answer

Jet lag is calculated based on the time difference between your departure and arrival timezones. The severity depends on how many time zones you cross: Minimal (0-2 hours), Mild (2-4 hours), Moderate (4-8 hours), or Severe (8+ hours). The calculator also considers flight direction (eastward travel is typically harder) and flight duration.

Question 3

How long does jet lag last?

Accepted Answer

Jet lag recovery time varies by severity: Minimal jet lag (0-2 hours difference) typically resolves in 0-1 day. Mild jet lag (2-4 hours) takes 1-2 days. Moderate jet lag (4-8 hours) takes 3-5 days. Severe jet lag (8+ hours) can take 5-7+ days. Recovery time also depends on age, health, and how well you prepare and adjust.

Question 4

Which direction causes worse jet lag - east or west?

Accepted Answer

Traveling east generally causes worse jet lag than traveling west. When traveling east, you 'lose' time, making it harder to fall asleep earlier. When traveling west, you 'gain' time, making it easier to stay awake later. Most people find it easier to delay sleep (westward) than advance sleep (eastward), which is why eastbound flights are typically more difficult.

Question 5

How can I prevent or minimize jet lag?

Accepted Answer

To minimize jet lag: 1) Start adjusting your sleep schedule 3-7 days before travel, 2) Stay well-hydrated and avoid alcohol during the flight, 3) Get sunlight exposure at your destination, 4) Follow local meal times, 5) Consider melatonin supplements (consult doctor first), 6) Avoid heavy meals and caffeine close to bedtime, 7) Use eye masks and earplugs during flight.

Question 6

Does melatonin help with jet lag?

Accepted Answer

Yes, melatonin can help with jet lag by signaling to your body that it's time to sleep. It's most effective for eastward travel or when you need to sleep earlier. Typical doses are 0.5-5mg taken 30-60 minutes before desired sleep time at your destination. Consult with a healthcare provider before using melatonin, especially if you have medical conditions or take other medications.

Question 7

What are the symptoms of jet lag?

Accepted Answer

Jet lag symptoms include: fatigue and exhaustion, insomnia or difficulty falling/staying asleep, daytime sleepiness, difficulty concentrating or thinking clearly, irritability or mood changes, digestive problems (constipation or diarrhea), headaches, general feeling of malaise, and reduced physical and mental performance. Symptoms typically begin within 1-2 days of arrival.

Question 8

Does age affect jet lag recovery?

Accepted Answer

Yes, age can affect jet lag recovery. Older adults (over 60) typically experience more severe jet lag symptoms and take longer to recover. Children and young adults generally recover faster. This is because older adults have less flexible circadian rhythms and may have pre-existing sleep issues. However, individual factors like overall health, fitness level, and preparation also play significant roles.

Question 9

How does light exposure help with jet lag?

Accepted Answer

Light exposure is crucial for resetting your circadian rhythm. Bright light (especially sunlight) in the morning signals your body to wake up and adjust to the new time zone. Conversely, avoiding bright light in the evening helps prepare your body for sleep. Light therapy glasses or maximizing natural sunlight exposure at appropriate times can significantly speed up jet lag recovery.

Question 10

Can exercise help with jet lag?

Accepted Answer

Yes, moderate exercise can help with jet lag by promoting alertness, improving sleep quality, and helping reset your circadian rhythm. Light to moderate exercise in the morning at your destination can boost energy and help adjust to local time. However, intense exercise too close to bedtime may interfere with sleep, so timing is important. Exercise also helps combat the fatigue associated with jet lag.

Jet Lag Calculator - Jet Lag Recovery Calculator & Travel Jet Lag Calculator

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