Bring water, this is a tricky thing because these days they will not accept water on the plane, and will make you buy their water instead.In either case, it's crucial to drink a lot.
On a very long flight you need to keep hydrated even more. The hours fly by and when you least expect it you might feel dizzy and stiff and suffer from muscle pains. So make sure to do some stretches (even if you're next seat neighbour thinks you're mad) Drink a lot (no alcohol) And try to get something to eat.
More tips coming up!
