How to Beat Jet Lag on Long-Haul Business Travel

17 August 2026 | Travel News

Jet lag compromises the exact things a business trip is designed to protect: sharp decision-making, steady negotiation and a clear head in the room. Most advice on how to beat jet lag on long-haul business travel stops at drinking water and avoiding coffee. That is not a strategy. It is a shrug.

Why jet lag is a performance problem, not a discomfort

Jet lag is your body clock disagreeing with the sun. Every organ system runs on a roughly 24-hour rhythm set by light exposure, and that rhythm does not update the moment you land. It updates gradually, at a rate of about one time zone a day. Fly from London to New York and your body is still operating five hours behind the room you are sitting in. Fly to Los Angeles and it is eight hours behind. That gap shows up as slower reaction time, flatter mood and weaker judgement, at precisely the moment a client or a board is watching.

The circadian science behind it

Light exposure timing

Light is the strongest signal your body clock responds to. Get bright light at the wrong time and you push your rhythm further out. Get it at the right time and you pull it forward. Travelling east, as on a London to New York or Dubai route, the rule of thumb is to seek light in the local morning and avoid it in the evening. Travelling west reverses this. It sounds small. It is the single most effective lever available.

Melatonin and sleep pressure

Melatonin timing matters more than the dose. Taken at the wrong hour it does nothing useful and can worsen grogginess. Taken close to the target bedtime in the new time zone, in a low dose, it nudges the body clock in the right direction. Pair it with genuine sleep pressure, built up by staying awake through the local afternoon rather than napping, and the shift happens faster.

Choosing a departure time that works with your body clock

The flight you book is already shaping how the trip will feel. An evening departure from London that lands in New York in the early evening gives you one ordinary night’s sleep before a full working day. A red-eye that lands at breakfast time and heads straight into meetings is asking for a performance you have not earned yet. Departure time is a decision worth making deliberately, not defaulting to the cheapest slot on the schedule.

Managing the first 48 hours on arrival

Eastbound versus westbound

Eastbound travel, losing time, is harder on the body than westbound travel, gaining it. Build this into expectations. A same-day high-stakes meeting after an eastbound overnight flight is the riskiest combination on the calendar. Where the itinerary allows it, protect the first few hours after arrival from anything that requires your best thinking.

A simple framework

Set a target bedtime in the destination time zone before you fly. Seek or avoid light according to the direction of travel. Take melatonin close to that target bedtime, not on the plane. Eat on the new schedule, not the old one. None of this is complicated. It is just rarely done with any discipline, because nobody has built it into the itinerary.

“The travellers who arrive ready are not the ones who got lucky with the flight. They are the ones whose departure time, arrival schedule and first day were planned around the meeting that mattered, not the other way round.”
Chris Donovan, founder, echo.bravo