Beating jet lag quickly: what actually works?

Jet lag happens when your internal body clock (circadian rhythm) is out of sync with the local time after crossing multiple time zones. It can cause fatigue, insomnia, digestive issues, and difficulty concentrating. While there is no magic cure, certain strategies can help you adjust faster.

What is happening

Your body has an internal clock that regulates sleep, alertness, hunger, and hormone release. When you travel rapidly across time zones, this clock remains set to your home time, causing a mismatch with the external environment. The severity of jet lag depends on the number of time zones crossed, the direction of travel (eastward usually causes more difficulty), and individual factors.

What to do first

1. Before travel: If possible, gradually shift your sleep and meal times toward the destination schedule a few days before departure. For example, if traveling east, go to bed and wake up earlier; if traveling west, later.
2. During flight: Stay hydrated by drinking water, avoid alcohol and caffeine, and try to sleep if it is nighttime at your destination. Use earplugs and an eye mask to create a restful environment.
3. Upon arrival: Immediately adopt the local time. Set your watch and devices to the destination time. Eat meals at local mealtimes, even if you are not hungry, to help reset your digestive clock.
4. Get daylight exposure: Spend time outdoors during daylight hours, especially in the morning if you traveled east. Light is the strongest signal for resetting your circadian rhythm. If you traveled west, seek light in the late afternoon or evening.
5. Stay active: Light exercise during the day can help you stay awake and adjust faster. Avoid intense workouts close to bedtime.
6. Nap wisely: If you are extremely tired, take a short nap (20-30 minutes) early in the afternoon. Avoid long naps or napping late in the day, as this can make it harder to sleep at night.
7. Sleep environment: Keep your bedroom dark, quiet, and cool. Avoid screens before bed as blue light can interfere with melatonin production.

What NOT to do

• Do not rely on alcohol to help you sleep; it disrupts sleep quality and worsens dehydration.
• Do not consume caffeine after midday if you are sensitive to its effects, as it can prevent you from falling asleep at the local bedtime.
• Do not force yourself to stay awake if you are dangerously sleepy, especially when driving or operating machinery. Take a short nap or rest instead.
• Do not take melatonin without consulting a healthcare professional, especially if you are pregnant, breastfeeding, or taking other medications.

When to seek professional care

Jet lag usually resolves within a few days. However, consult a healthcare professional if symptoms are severe, last more than a week, or significantly interfere with your daily functioning. Also seek advice if you have underlying health conditions or are taking medications that affect sleep.

What to monitor

Pay attention to your sleep patterns, energy levels, and mood. If you experience persistent insomnia, excessive daytime sleepiness, or other concerning symptoms, seek medical advice.

How to prevent it

While you cannot completely prevent jet lag, you can minimize its impact by planning ahead: choose flights that arrive in the evening if traveling east (so you can go to bed soon after arrival), or in the morning if traveling west (to expose yourself to daylight). Stay hydrated and move around during the flight to reduce stiffness and fatigue.

Remember that this is general information and not a substitute for professional medical advice. If you have a medical condition or are unsure about any strategy, consult a healthcare provider.