When I had to fly international as a 6'6" professor (cheap seats - thanx, UCLA) , I'd preflight with 2 shots of tequila and 20 mgs of diazepam (DEA license - thanx, US Dep't of Justice) . Lasted 10 to 11 hours, good for non-stops from LAX to Europe and Scandinavia. No muscle cramps or unnecessary chit-chat with… » 5/31/14 6:56pm 5/31/14 6:56pm