The Science-Backed Jet Lag Routine: What to Do Before, During, and After a Flight

Jet lag primarily results from circadian misalignment , where the body's internal clock remains synchronized to the home time zone despite a new schedule in a different location. Key factors influencing this misalignment include:

Light exposure (most significant factor) Sleep timing Meal timing

General guidelines indicate that traveling east typically presents more challenges as it requires falling asleep earlier, while traveling west is generally easier as it involves staying up later.

Pre-Flight Preparation (72 Hours Before Departure)

1) Gradual Schedule Adjustment (for 3+ Time Zones)

For significant trips, such as work-related or short visits, begin adjusting your schedule by 30–60 minutes daily towards the destination time:

Eastbound: Move bedtime earlier each night. Westbound: Move bedtime later each night.

Before traveling, adjust your phone to the destination's time and align your activities accordingly:

Eat meals closer to the destination's meal times. Use caffeine in sync with the destination's morning. Begin winding down according to the destination's night.

Dehydration can exacerbate travel fatigue. To mitigate this:

Start the day well-hydrated. Carry an empty bottle through security and fill it afterward.

If necessary, restrict naps to 20–30 minutes to prevent disrupting sleep at the destination.

Opt for meals that promote stable energy levels:

Protein and fiber Moderate carbohydrates Avoid heavy meals and alcohol as an initial choice

Manage light exposure to regulate circadian rhythms:

Eastbound: Seek morning light at the destination, limit evening light exposure. Westbound: Get evening light, avoid forcing early bedtimes on the first night.

Regularly sip water. Limit alcohol and caffeine, especially towards the destination's evening.

Move every hour to enhance circulation and reduce stiffness:

Stand and walk down the aisle. Perform ankle circles and calf pumps in your seat.

Attempt to sleep in blocks, aiming to align with the destination's night:

Use an eye mask and earplugs. Dress in layers to maintain a slight coolness.

Melatonin may assist in adjusting sleep timing. Consult with a clinician if uncertain, particularly when taking other medications.

Within the first few hours after landing, spend 10–20 minutes outdoors to facilitate adaptation.

If necessary, limit naps to 20–30 minutes and avoid napping close to bedtime.

Emphasize sleeping at the correct local night time, even if sleep is limited to 5–6 hours.

Empty water bottle for filling after security check Eye mask and earplugs Light snacks Optional compression socks for long-haul flights

For those preferring single-serve hydration packets, FlyWell offers a travel-friendly option that includes electrolytes.

Jet lag duration varies based on time zones crossed, travel direction, and light and sleep management, typically lasting a few days.

Minimize alcohol consumption to enhance recovery, as it can impair sleep quality and exacerbate dehydration.

The most effective strategy involves exposure to destination light and aligning sleep with local night time.

Based on reporting by TechBullion.