Start your journey wide-awake. Don’t try to tire yourself out in an attempt to fall asleep more easily on the aircraft: it just doesn’t work for most people.

Wear comfortable clothing: wide, loose and not too fussy. Pack a warm pullover.

Make sure your legs have as much room to move as possible; don’t cramp your freedom to move with luggage.

Take a walk occasionally. Brief walks to explore the aircraft help the circulation of the blood and therefore healthy sleep.

An inflatable neck cushion will help stop you waking up with a crick in the neck in the morning.

Fasten your seat-belt where the crew can see it easily during the flight – ideally over your blanket – so that they won’t need to wake you up.