-Drink plenty of fluids; yes it sounds silly to say this but many people will avoid drinking on air planes to avoid having to get up and use the bathroom. Not drinking fluids will make you dehydrated and cause more jet lag, especially on a red eye flight
-Sleeping aids; using eye masks, travel pillows, slipper socks, and air plugs will help you sleep on a long flight especially when crossing multiple time zones. I would avoid taking sleeping pills, on a recent trip they only made me feel tired but did not actually put me to sleep.
-Exercise; yes I said exercise, exerciseing while in flight is easy to do. Get up and down a few times during a long flight, walking to the bathroom even if you don’t have to use it will help to reduce discomfort from sitting too long.
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