How to Prepare Your Body for Travel (And Actually Enjoy the Trip)
Over 1 billion people travel internationally each year, and studies suggest 20–70% experience some form of illness or injury during their trip. It’s because most people plan what to pack but forget to prepare their body. A few simple changes in the days before you travel can prevent fatigue, jet lag, dehydration, and illness.
This guide covers exactly what to do and when to do it.
Quick Answer
Start preparing three to five days before you leave. Adjust your sleep, drink more water, eat lighter meals, and stay active. On travel day, eat light, stretch, and wear comfortable clothing. If crossing time zones, get sunlight on arrival and stay awake until local bedtime. For international travel, check your vaccination needs early.
Some vaccines require doses weeks apart, so book a travel health appointment well in advance.
Table of Contents
Start Preparing a Few Days Before Travel
Leaving everything the night before is a recipe for arriving exhausted. Your body responds well to gradual changes, not sudden ones.
As per reports, Eastward travel is harder to adapt to. So start shifting your sleep schedule two to three days out. If you are flying east, go to bed thirty minutes earlier each night. Flying west, push it slightly later.
Cut back on processed food and takeaways. Eat more whole foods, and keep portions moderate. A short walk each day, even twenty minutes, helps circulation and reduces the stiffness that long journeys bring.
Get Enough Sleep Before Your Trip
Turning up at the airport sleep-deprived is one of the worst ways to start a trip. Fatigue weakens your immune system, slows your reaction times, and makes jet lag far worse.
Aim for seven to nine hours in the nights before you travel. Wind down properly in the evenings. Put screens away at least an hour before bed. Avoid caffeine after 2pm.
If you find it hard to switch off, then go for a short walk in the evening or do some light reading. A cool, dark room makes a real difference too.
Stay Hydrated
Cabin air on long-haul flights has very low humidity. According to research, gas expansion in-flight increases by ~35%. Your body loses water faster than usual without you noticing it. By the time you feel thirsty, you are already dehydrated.
Aim to stay well hydrated before flying (typically around 1.5–2 litres daily for most adults, depending on individual needs). Carry a reusable water bottle and refill it once you are past security.
Limit alcohol and caffeine during the flight. Both speed up fluid loss and disrupt your sleep patterns further.
Eat Light and Balanced Meals
Heavy meals before and during travel slow digestion, cause bloating, and leave you feeling sluggish. The pressure changes in a cabin already make your gut expand slightly. Adding a greasy airport burger on top rarely ends well.
Stick to fruits, vegetables, lean proteins, and whole grains in the days before you go. On travel day, eat a light meal a couple of hours before departure. Good options include porridge, eggs on wholegrain toast, or a salad with chicken.
Avoid fried food, very spicy dishes, and anything high in sugar before and during the flight. Your gut will thank you on arrival.
Boost Your Immune System
Airports and planes are crowded environments where infections can spread more easily, despite modern aircraft using filtered air systems. So picking something up is genuinely common, especially on long-haul routes.
Wash your hands regularly, and avoid touching your face. Eat foods that support immune function in the week before travel: citrus fruits, leafy greens, garlic, ginger, and yoghurt with live cultures. Sleep is probably the single best immune support.
Vitamin C and zinc may support immune function in some cases, particularly if dietary intake is low, but they are not a substitute for a balanced diet. Speak to a pharmacist if you are unsure what is appropriate for you.
Vaccinations are one of the most effective steps you can take before international travel. Depending on your destination, you may need protection against diseases that are rare in the UK but common elsewhere. Our travel clinic can advise on exactly which vaccines are recommended for your trip and administer them safely.
Prepare for Jet Lag
Jet lag is your body’s internal clock being out of sync with the local time at your destination. It affects sleep, digestion, concentration, and mood.
Shift your sleep schedule before you leave, as mentioned above. Once you arrive, get outside in natural daylight as soon as possible. Sunlight is the strongest signal your body uses to reset its clock.
Stay active on arrival day, even if you feel tired. Avoid naps longer than twenty minutes. Stick to local meal times and get to bed at a reasonable local hour, even if it feels strange at first.
Pack Health Essentials
What you pack for your health matters as much as what you pack for the weather. Do not leave this task to the morning of travel.
Essentials worth packing:
- Prescription medications, with enough supply for the full trip plus a few days spare
- A reusable water bottle
- Healthy snacks: nuts, oat bars, dried fruit
- A neck pillow for long journeys
- Compression socks if you are sitting for more than four hours
- A basic first aid kit: paracetamol, antihistamines, rehydration sachets, plasters
If you take regular medication, carry a copy of your prescription. Keep medicines in hand luggage, not in checked bags.
Day of Travel Checklist
Keep it simple on the day itself. Stress and rushing undo a lot of the preparation you have done.
- Eat a light meal two hours before departure
- Drink water before you get to the airport and take a bottle through security
- Wear loose, comfortable clothing and breathable footwear
- Do five to ten minutes of light stretching before you sit down for a long flight
- Skip the extra coffee at the airport if you are already anxious or tired
Get to the airport with enough time that you are not running. Rushing raises cortisol, and that is the last thing you want before hours of sitting still.
Frequently Asked Questions
How far in advance should I start preparing my body for travel?
Three to five days is enough for most people. If you are travelling across several time zones or have a long-haul flight of over ten hours, starting a week out gives you more flexibility to adjust sleep schedules gradually.
Are compression socks actually worth it?
Yes, particularly for flights over four hours. Sitting still for long periods slows blood flow in the legs. Compression socks can help reduce leg swelling and may lower the risk of deep vein thrombosis, particularly on longer flights or in higher-risk individuals. They are widely available in pharmacies and most airports.
What should I eat the night before a long flight?
Something light and easy to digest. Think grilled fish or chicken with vegetables, a simple pasta dish, or soup with wholegrain bread. Avoid anything very rich, fried, or heavily spiced. A good night’s sleep matters more than the meal itself, so do not eat too late.
Can supplements help with jet lag?
Melatonin may be used for jet lag in some cases, and has reasonable evidence behind it for resetting sleep patterns after crossing time zones. But in the UK it is prescription-only and should only be used following advice from a healthcare professional. General multivitamins are unlikely to make a noticeable difference to jet lag specifically.
How do I avoid getting ill after long-haul travel?
Stay hydrated, sleep as much as you can on the flight, and wash your hands regularly. Avoid touching your face. Eating well in the days before travel and being up to date on any destination-specific vaccinations significantly reduces your risk of picking up something serious.
Is it safe to exercise on the day of a long flight?
Light exercise is fine and can actually help with circulation and stress before travel. Avoid anything intense or exhausting. A thirty-minute walk, some yoga, or a gentle swim is ideal. You do not want to arrive at the airport with sore muscles and no energy.
What is the best way to sleep on a plane?
Recline your seat as far as it goes, use a neck pillow, and wear an eye mask. Noise-cancelling headphones or earplugs help significantly. Avoid alcohol as a sleep aid as it reduces sleep quality. If you struggle with plane sleep, a pharmacist can advise on short-term sleep support options that are safe for occasional use.
Final Thoughts
Preparing your body for travel is not about following a strict regime. It is about making a few sensible choices in the days before you go so that your body is in decent shape when it counts.
Sleep well, drink enough water, eat lightly, move a little each day, and do not leave your health kit to chance.
Warning: For international travel, check whether you need vaccinations before you fly. Some destinations carry genuine health risks that are entirely preventable.
Visit our travel clinic before your next trip. We can advise on destination-specific vaccines, malaria prevention, and any other health precautions relevant to where you are going. Book an appointment online or speak to one of our pharmacists in person.
Zainab Master is the Superintendent Pharmacist and owner of Your Local Pharmacy. With extensive experience in community pharmacy and patient care, she is dedicated to helping local patients access safe, professional, and convenient healthcare services. Zainab specialises in pharmacy-led treatments, travel vaccinations, earwax removal, contraception services, blood pressure checks, and everyday health advice. Her focus is on providing trusted healthcare support with a patient-first approach.