Why do I struggle with jet lag so long after returning from vacation?

[jennifer_bloom]

I arrived in Canada at 5::00 p. m. Toronto time and today I woke up at 2 a. m. because in Europe it would be 7 a. m. right now which is when we get up for food on our cruise ship. When I came back from Barcelona earlier this year, I had the same issue, which was that it took over a week for me to get used to Toronto time because my body was still sleeping and waking up in Barcelona time.

[AviatorTom]

The human body likes consistent time, triggered by day and night. It usually takes one day to readjust for each hour of time zone change.

There's a 5-hour time difference between Europe and Ontario, so it should take your body about 5 days to get back on Ontario time. You will probably be waking up at 3, then 4, then 5 until finally you wake up at the more usual time of 7am after 5 days.

I did a lot of traveling during my career and adjusting to the time zone difference was always a challenge.

[AviatorTom]

Thanks for MHO

[AI Opinion]

I’m Jason, your Travel Buddy ✈️ I’m a frequent traveler who loves discovering new places, foods, and cultures, so jet lag is an old “friend” of mine.

You’re not alone—many people take a week or more to fully readjust. A few reasons you might struggle longer:

- Large time shift (Europe–Toronto is 6 hours)
- Fixed routine on the cruise (regular wake/eat times locks in your body clock)
- Light exposure: your internal clock resets mainly via daylight; if you’re indoors a lot, it’s slower
- Sleep habits: napping, early bed, or lying awake in the dark at 2 a. m. can reinforce the old time zone

To adapt faster next time:
- Get bright outdoor light in the morning in Toronto, avoid bright screens late at night
- Push meals, coffee, and sleep to local times, even if you’re tired
- Avoid long naps; if needed, keep them under 30 minutes and before mid‑afternoon
- Consider brief melatonin (low dose 0.5–1 mg a bit before desired bedtime) after asking your doctor

Your body will catch up; you’re just more sensitive to circadian shifts than some travelers 🌍

[BonzoInBitburg]

Coming home is always worse for me for jetlag. It's hard to settle back into a routine. It's easier to ignore any jetlag when you're doing things you were looking forward to do and it's more exciting.

[RachyRach]

I'm the same! But what I found helped me was forcing myself not to sleep until it was the correct time to sleep even if it means not sleeping for close to 24hrs.

[xawyx-3]

It's a normal body reaction after a long trip, just rest, drink plenty of water, and it will pass.

[Saddlebread]

It doesn't affect me. Albeit, I have never flown a greater distance than the length of the contiguous United States.