Training Through Jet Lag: Keeping Strength on Long-Haul Trips
Exercise helps with jet lag mainly by getting you outdoors in daylight at the right local time and keeping you awake until a sensible bedtime. It does not need to be hard. On arrival day, a brisk walk or an easy 20 to 30 minute session in the morning or early afternoon local time is more useful than a heavy workout. Save hard lifting for the second or third day, once you are sleeping at least partly on local time. On short trips of two or three days, it is often better to stay roughly on UK time and keep your training as close to normal as you can. Strength holds well over a week or two, so the goal is to stay moving, not to set records.
What jet lag does to training
The NHS describes the familiar symptoms: difficulty sleeping at night, waking early, daytime tiredness, poorer concentration and sometimes an upset stomach. It usually improves within a few days. Its jet lag page is worth a read before a long trip.
For training, that translates into three practical problems. Sessions at your normal UK time may fall in the middle of your destination night. Effort feels harder than usual, so the weight you lifted last week feels heavy. And concentration dips, which matters more for barbell work than for a run or a bike ride. None of this is dangerous in itself, but it is a good reason to lower your expectations for the first couple of days.
The principle: use training as a clock, not a test
Your body clock responds strongly to light, and to a lesser extent to meal times and activity. The NHS advice centres on adjusting your sleep to local time quickly, getting daylight, and avoiding daytime naps. Exercise supports all three: it gets you outside, it gives you something to do in the drowsy mid-afternoon, and a moderate session can make it easier to stay up until a local bedtime.
That framing changes what you choose to do. On the first day, the right session is the one that keeps you upright and outside at the right times, not the one that tests your strength.
A day-by-day plan for a week-long trip
| Day | Training | Aim |
|---|---|---|
| Flight day | Walk the terminal, stand and stretch every hour or two on board | Stiffness and circulation |
| Arrival day | 20 to 30 min brisk outdoor walk or easy run in daylight, local morning or early afternoon | Light exposure, stay awake |
| Day 2 | 30 to 40 min moderate session: bodyweight or light dumbbell circuit, mobility | Move well, no testing |
| Day 3 onwards | Normal strength session, perhaps one set fewer than usual on main lifts | Hold strength |
| Return home | Repeat arrival-day pattern, then normal training from day 2 or 3 | Re-adjust to UK time |
If the hotel gym is limited, our hotel room workout needs no equipment and fits in 30 minutes.
East or west: does direction change the plan?
Many travellers find flying east harder, because it asks you to fall asleep earlier than your body wants to, while flying west asks you to stay up later, which most people find easier. The practical effect on training is about timing:
- After flying east (for example London to Singapore or Tokyo): train in the local morning or late morning. Morning daylight helps, and a hard evening session can make an early bedtime even harder to manage.
- After flying west (for example London to New York or San Francisco): a late afternoon session works well. It helps you stay awake into the local evening, when your body thinks it is the middle of the night.
If you are unsure, the default is simple: get outside in daylight in the local morning, and finish any hard session at least two or three hours before bed.
Short trips: stay on UK time
The NHS notes that for trips of two or three days, it can be easier to keep to your home sleeping and eating times. That applies to training too. If you are in New York for two nights, a 6am session there is 11am in London: an ordinary late-morning session for your body. Keep your usual programme, keep meals near UK timings where meetings allow, and you will come home with very little to recover from.
What to adjust in the session itself
- Lower the load, not the movement. Use the same exercises at around 80 to 90 percent of your normal working weight for the first hard session. You keep the habit and the skill without forcing it.
- Extend the warm-up. After hours in a seat, hips, ankles and upper back are stiff. Give them five extra minutes.
- Skip max attempts. A jet-lagged, distracted lifter is not the person to attempt a heavy single.
- Keep conditioning moderate. Hard intervals add stress on top of short sleep. Steady efforts are kinder.
- Drink water, go easy on caffeine and alcohol. The NHS specifically advises limiting both when travelling across time zones.
What you lose in a week away
Very little. Strength and muscle are well maintained over a week or two of lighter training, and a single missed week makes almost no measurable difference for most people. What does slip is routine. The biggest risk on frequent long-haul trips is not losing strength on the trip; it is the week after, when you are tired, behind on work, and the habit quietly lapses. Book your first session back before you fly. Our guide on eating well on business trips covers the food side, which is usually where more ground is lost.
A travel checklist
- Check the hotel gym hours and equipment before booking, or pick a hotel near a park.
- Pack trainers and one set of training kit in your hand luggage.
- Note sunrise time at your destination and plan a morning walk.
- Decide before you land whether you are adjusting to local time or staying on UK time.
- Schedule your first session back home for day two after you return.
How we handle travel with clients
Many of the professionals I coach in Highgate travel regularly for work. Rather than treating each trip as a break, we plan around it: a slightly heavier week before departure, a short travel programme they can do anywhere, and a deliberately easy first session back. That way a trip is a planned dip, not an interruption. If that is your pattern, 1-1 personal training in Highgate can be built around your travel calendar rather than fighting it.
Long flights carry a small risk of blood clots. If you have a history of clots, a heart condition, are pregnant, or have had recent surgery, check with your GP first before travelling and before planning hard training on arrival.
Questions we get asked
Should I train the morning I fly?
A short, easy session is fine and can help you sleep on the plane. Avoid a very hard workout before a long flight, as you will spend hours sitting stiff and dehydrated afterwards.
Does exercise cure jet lag?
No. It supports adjustment, mostly through daylight exposure and helping you stay awake at the right times. Light and sleep timing do most of the work.
Is it safe to lift heavy on arrival day?
It is rarely smart. Reaction time and focus are reduced, and the session will feel harder than it should. Wait a day or two.
Can a trainer write me a travel programme?
Yes. A good personal trainer should give you something you can do in a hotel gym or a room, matched to what you are doing at home.
Book with The Highgate House
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