BTW: After a long flight its usually your butt that hurts as well as
your head from the headset. I've done 7 hour legs in my Mooney, usually
when trying to clear Mexican customs in Southern Mexico (I don't clear
in Northern Mexico because it takes more time and you can't fly at
night in Mexico so you can get "stuck"). In Southern Mexico, you can
land right at sunset and still have time for customs.

-Robert