I fly more than most people I know, and for years I treated jet lag like a tax I just had to pay. Land groggy, push through, lose two or three days on the other side. Then I started treating travel the way I treat everything else in my life: like an athlete treats a competition. With a protocol. And jet lag stopped owning me.
Here is the thing nobody tells you: jet lag is not about being tired from a long flight. It is a circadian problem. Your body runs on an internal 24-hour clock, and when you cross time zones faster than that clock can adjust, your biology and the local wall clock fall out of sync. Your melatonin, your core body temperature, your hunger, your cortisol, your alertness — all of it is still running on the schedule you left behind.
Light is the master clock. Get the light right, and everything downstream starts to fall into place.
So we are going to work with your clock, not against it. Let me walk you through exactly what I do — before, during, and after.
Before You Fly
The best jet lag work happens before you ever get to the airport. You cannot fully adapt in advance, but you can close the gap so your body has less distance to travel.
Nudge your sleep window
Starting one to two days out, I shift my sleep and wake times by 30 to 60 minutes per day toward my destination's schedule. Flying east (say, to Europe)? Go to bed and wake up earlier. Flying west? Push everything later. Even a partial shift means you land with a head start instead of starting from zero.
Anchor it with light
Light timing is what makes that shift actually stick. Traveling east, I get bright light early in the morning and dim things down in the evening. Traveling west, I chase light later in the day and protect my mornings from too much intensity. Pair the light with your sleep shift and you are already speaking your destination's language.
In the Air
The flight itself is where most people accidentally make jet lag worse. This is your chance to set the tone.
- Set your watch to destination time the second you board. This is a mental trick, but it is a powerful one. You start making sleep and meal decisions based on where you are going, not where you have been.
- Hydrate relentlessly. Cabin air is punishingly dry, and dehydration masquerades as fatigue. I drink water steadily and skip anything that pulls fluid out of me.
- Skip the alcohol. I know, the little wine on the tray is tempting. But alcohol fragments your sleep and deepens dehydration — it is a double hit on the exact systems you are trying to protect.
- Sleep strategically, not randomly. Only sleep on the plane if it is nighttime at your destination. If it is daytime where you are headed, stay awake — read, work, move. A well-timed nap helps; a random one just muddies your clock.
- Eat on destination time. Food is a secondary clock signal. When I can, I time my meals to the destination and go lighter than the airline portions. If it is the middle of the night where I am landing, I would rather skip a meal than eat at 3 a.m. body time.
- Move. I get up every hour or two to walk the aisle, stretch, and do a few calf raises. Circulation keeps you feeling human and helps you sleep on the right schedule.
When You Land
This is the moment that makes or breaks your trip. What you do in the first few hours matters more than anything.
Get outside, immediately
The single most powerful thing you can do is get natural light on your terms. Real outdoor light is orders of magnitude brighter than any indoor bulb, and it is the fastest way to reset your master clock. Drop the bags, step outside, and let your eyes do the work.
Time your light by direction
Direction of travel changes the whole strategy, because you are either trying to advance your clock or delay it:
- Flying east (you need to wake up earlier), seek morning sunlight and avoid bright light late in the evening. Morning sun pulls your clock forward.
- Flying west (you need to stay up later), get light in the late afternoon and early evening and go easy on intense morning light for the first day or two. Evening light holds your clock back.
Use caffeine like a tool, not a crutch
Caffeine is fantastic for propping up daytime alertness while you adjust — but only in the first half of the destination day. I cut it off by early afternoon local time so it does not sabotage the first night's sleep, which is the sleep that sets your rhythm.
Melatonin, done right
Melatonin is misunderstood. It is not a sleeping pill — it is a timing signal that tells your body "night is coming." That means the timing matters far more than the dose. I use a small amount (think fractions of what most bottles suggest — more is not better here) taken in the evening at my destination, a bit before target bedtime. Taken at the wrong hour, it can actually shift your clock the wrong way, so treat the timing as the active ingredient.
Recovery: The First 48 Hours
Once you have landed and reset, a few habits lock the adjustment in.
- Chase sunlight all day. The more real daylight you get on day one, the faster and more permanently your clock settles. Take your calls and meals outside if you can.
- Move your body. A walk, an easy workout, some mobility work — movement signals daytime to your whole system and burns off the travel stiffness. Just keep hard training earlier in the day.
- Protect the first night. This one is non-negotiable for me. Cool, dark, quiet room. Screens off well before bed. No late alcohol, no heavy late meal. That first night is the foundation the rest of the trip is built on.
None of this is complicated. It is just intentional. When you stop leaving your recovery to chance and start running a protocol, you land ready to work, to explore, to be there — instead of spending your first days in a fog. Your body is capable of extraordinary adaptation. Give it the right signals, in the right order, and it will meet you where you are.
A gentle note: I am not a doctor, and this is education, not medical advice. Supplements like melatonin and strategies like light timing affect everyone differently — please check in with a qualified healthcare provider about what is right for you, especially if you are managing a health condition, are pregnant, or take medication.