Dehydration can be avoided by drinking fluids throughout the flight.
Travel Lightly
Make sure you carry minimum items that you will need during your flight.
Wear Glasses
The dry air and high pressure of an airplane can cause dehydration and irritation, therefore if you use contact lenses, it's a better idea to swap it for glasses.
Use Skin Moisturiser
Apply a high quality thick moisturiser to ensure your skin doesn't dry out.
Keep Moving
Exercise your lower legs and calf muscle, so during the flight to keep the blood flowing more freely into your legs. This encourages blood flow.
Make yourself Comfortable
Loosen clothing, remove jacket and avoid anything pressing against your body.
Things to remember
Before your journey
If you have any medical concerns about making a long journey, or if you suffer from a respiratory or cardiovascular condition, it is best to consult your doctor prior to making the reservation.
Ask your doctor whether you will need any vaccinations or special medication.
Sleep early - Get a good night's sleep before the flight.
Avoid overeating - Have a light pre-flight meal before the flight.
At the airport
Allow yourself plenty of time for check-in.
Avoid carrying heavy bags through the airport and onto the flight as this can place the body under considerable stress,
Once through to departures try and relax as much as possible.
During the flight
Chewing and swallowing will help equalize your ear pressure during ascent and descent.
Get as comfortable as possible when resting and turn frequently.
Avoid sleeping for long periods in the same position.
When you arrive
Try some light exercise or do some reading, if you can't sleep after arrival at your destination.