Jet Lag Tips for Indians: Circadian Rhythm, Melatonin, Light Therapy & Day-1 Strategy
By Devika Pillai (Devika Pillai covers cruises and rail travel for Indians — cruise lines from Indian ports, Eurail and international rail passes, and overnight trains as a flight alternative.) · Published · 10 min read
Circadian science, melatonin dosing, light therapy and the day-1 strategy that gets Indian travellers functional in 24-48 hours.
Why jet lag hits Indians harder going some directions
Jet lag is your internal body clock (the circadian rhythm) being out of sync with the local clock at your destination. The mismatch causes the classic symptoms: insomnia at night, drowsiness during the day, indigestion, brain fog, irritability, low mood. For Indian travellers there is an asymmetry — flying east is harder than flying west for most people. Here is why and what to do.
Your natural circadian rhythm is slightly longer than 24 hours (around 24.2 hours for most adults), which is why staying up an extra hour is easier than going to bed an hour earlier. Flying west "delays" your day (you gain hours), which aligns with this natural tendency. Flying east "advances" your day (you lose hours), which fights it.
From India:
- Flying west to Europe / UK / US: easier. Your bedtime in India (10 PM) becomes 5:30 PM in London or 11:30 AM in New York — you can naturally stay up later.
- Flying east to Singapore / Bali / Japan / Australia: harder. 10 PM in India is 11:30 PM in Singapore, 12:30 AM in Bali, 2:30 AM in Tokyo. You arrive needing to sleep at what feels to your body like late afternoon.
The general rule: 1 day of jet lag recovery per time zone crossed. But active management can compress this to 50% or less.
Before flight — start aligning at home
Start adjusting your sleep schedule 3-5 days before the flight. Even partial pre-adjustment cuts post-flight recovery significantly.
- Flying east (e.g. India to Singapore / Tokyo / Sydney): go to bed 30-60 minutes earlier each night for 3-5 nights. Wake earlier. Expose yourself to bright morning light at home.
- Flying west (e.g. India to UK / Europe / US): shift bedtime later by 30-60 minutes each night. Wake later. Limit morning light, increase evening light.
- Pre-trip meals shifted slightly in the destination direction help.
Most travellers skip pre-adjustment because life gets in the way. Even one or two days of partial shift is helpful — do not skip it entirely.
During flight — sleep strategy by destination
Flying east (India to Asia-Pacific)
- Sleep aggressively on the plane, regardless of departure time. The aim is to land rested.
- If you must take only one nap, time it for the segment that corresponds to nighttime at destination.
- Eat light during "destination-day" hours; eat normally during "destination-night" hours.
Flying west (India to Europe / US)
- Do not sleep too much on the plane — you will arrive at destination-evening unable to sleep again at hotel bedtime.
- For India to Europe (8-9 hr flight, lands in destination-morning or midday): sleep 4-6 hours, max.
- For India to US East Coast (14-15 hr flight, lands afternoon-evening): sleep 5-7 hours, with a short second nap.
- Stay awake during what would be destination-day on the flight, even if it feels weird.
Melatonin — when, how much, when not
Melatonin is the hormone your pineal gland produces when it gets dark. Supplemental melatonin (synthetic, oral) is a sleep aid for circadian shift. Dosing:
- Dose: 3-5 mg taken 30-60 minutes before your target sleep time at destination. Higher doses (10 mg+) do not work better and increase next-day grogginess.
- Duration: use for the first 3-5 nights at destination, then taper off.
- Form: immediate-release for sleep onset, extended-release if you wake up at 3 AM.
When NOT to take melatonin:
- If pregnant or breastfeeding (always consult doctor).
- If on blood thinners or anti-seizure medication.
- If you have autoimmune conditions, depression or epilepsy.
- Children should only take melatonin under pediatric supervision.
Melatonin is prescription-only in India, OTC in most countries. Buy at destination if needed.
Light therapy — the most underrated tool
Light is the single biggest signal that sets your circadian clock. Sunlight in particular has 10,000-50,000 lux of brightness compared to 200-500 lux of indoor lighting. Strategic light exposure resets your clock faster than any other intervention.
Flying east (delaying east-shift recovery)
- Morning at destination: get bright light immediately. Walk in sun for 20-30 minutes between 7-10 AM local. Avoids the "second-day-is-worse" effect.
- Evening: avoid bright light after sunset. No phones in bed (or use night mode).
Flying west (delaying west-shift recovery)
- Morning at destination: stay indoors or wear sunglasses early morning to suppress wake signals.
- Evening: seek bright light late afternoon and early evening to push back your sleep onset.
For winter trips to Europe / Canada where sunlight is scarce, a 10,000-lux therapy lamp (Verilux, Carex, Ravna available on Amazon) used for 20-30 minutes per morning works as a substitute.
Day 1 at destination — the critical 24 hours
You arrive in the morning
- Resist the nap urge. Get sunlight. Stay active.
- Eat at local meal times even if not hungry.
- If you must nap, set a 20-30 minute alarm. Anything longer enters deep sleep and worsens jet lag.
- Go to bed at a local-appropriate time (9-10 PM). Melatonin 30 mins before if needed.
You arrive in the evening
- Eat dinner at local time.
- Avoid bright screens after 8 PM.
- Go to bed at 9-10 PM with melatonin if needed.
- Resist the temptation to "just check one email" — the blue light pushes back sleep onset.
You arrive in the middle of the night
- Try to sleep 4-6 hours at hotel.
- Wake at a local-morning time even if not rested.
- Bright light immediately.
Recovery timelines by destination
| Destination | Time difference | Direction | Active recovery time |
|---|---|---|---|
| Dubai | -1.5 hours | West | 1-2 days, minimal jet lag |
| Singapore | +2.5 hours | East | 1-2 days |
| Bangkok | +1.5 hours | East | 1 day |
| Tokyo | +3.5 hours | East | 2-3 days |
| Sydney | +4.5 hours | East | 3-4 days |
| London | -4.5 to -5.5 hours | West | 2-3 days |
| Paris / Frankfurt | -3.5 to -4.5 hours | West | 2-3 days |
| New York | -9.5 to -10.5 hours | West | 4-6 days (recovery) |
| Los Angeles | -12.5 to -13.5 hours | West (also feels east-shift) | 5-7 days |
| Toronto | -9.5 to -10.5 hours | West | 4-6 days |
The 1-day-per-zone rule is the unmanaged baseline. With aggressive light + melatonin + sleep management, recovery is 40-60% faster.
Other things that help (and hurt)
Help:
- Exercise — light cardio in destination morning anchors your clock. 20-30 minute walk works.
- Cold shower in the morning — wakes you faster than coffee.
- Caffeine — moderate amounts in destination morning is fine. Avoid after 2 PM.
- Hydration — continued aggressive water intake for the first 48 hours.
Hurt:
- Alcohol — disrupts deep sleep, dehydrates. Skip for first 2-3 days.
- Long naps — anything over 30 minutes worsens nighttime sleep.
- Heavy late dinners — interferes with sleep and digestion.
- Screens in bed — blue light pushes back melatonin production.
For specific long-haul prep beyond jet lag, see our long-haul flight survival and 15-hour India-USA pieces.
Frequently asked questions
How do Indians beat jet lag flying to the US?
Flying from India to the US East Coast crosses 9.5-10.5 hours. Strategy: pre-adjust by going to bed 30-60 minutes later for 3 days before flight; sleep moderately on the flight (5-7 hours); arrive in the US afternoon-evening; resist napping; get bright outdoor light; eat at local meal times; melatonin 3-5 mg 30 minutes before US bedtime for first 3-5 nights. Active recovery is 3-4 days vs the natural 9-10 days.
Why is jet lag worse flying east than west?
Your internal circadian rhythm is naturally slightly longer than 24 hours (around 24.2 hours), so staying up later (west-shift) aligns with it, while going to bed earlier (east-shift) fights it. Flying east from India to Singapore, Bali, Japan or Australia requires advancing your body clock, which is biologically harder than the delay required for west-bound travel to Europe or the US.
Is melatonin effective for jet lag?
Yes, when used correctly. Take 3-5 mg of melatonin 30-60 minutes before your target sleep time at destination, for the first 3-5 nights. Higher doses do not work better and may cause next-day grogginess. Melatonin is prescription-only in India but OTC in most other countries — buy it at destination. Avoid if you are pregnant, on blood thinners, anti-seizure or autoimmune medication, or have depression/epilepsy. Consult your doctor first.
How does sunlight help with jet lag?
Bright sunlight (10,000-50,000 lux) is the strongest signal that resets your circadian clock — much stronger than indoor lighting. After flying east, get morning sunlight at destination to advance your clock. After flying west, get evening light to delay it. For winter trips with limited sunlight, a 10,000-lux therapy lamp (Verilux, Carex) used for 20-30 minutes substitutes effectively. Combine with melatonin for fastest recovery.
Should I sleep on the flight or stay awake?
Depends on direction. Flying east (to Japan, Australia), sleep aggressively — you want to arrive rested for active days. Flying west (to Europe, US), sleep moderately and partially. For India-US flights, 5-7 hours of sleep on the 14-15 hour flight is ideal so you arrive in US afternoon-evening able to function until US bedtime. Use eye mask, earplugs and neck pillow regardless of direction.
How long does jet lag last after India-US flights?
Natural recovery is about one day per time zone crossed, so 9-10 days from India to US East Coast and 12-13 days to West Coast. With active jet lag management (pre-flight schedule shift, controlled in-flight sleep, melatonin, morning light exposure, hydration, no alcohol), this compresses to 3-5 days. Most Indian business travellers feel functional within 48 hours but full sleep normalisation takes a week.
Does jet lag affect children and elderly differently?
Yes. Children typically recover faster because of higher melatonin production and more flexible circadian rhythms. Infants can struggle with the disruption but recover quickly. Elderly travellers (60+) recover slower because melatonin production declines with age. Both groups benefit from longer pre-flight adjustment periods, gentler in-flight schedules and more conservative use of light therapy. See our travelling-with-elderly-parents guide for medication and travel insurance tips.