Originally Posted by tkarre
Sounds like you could be dehydrated. The air they circulate on planes is extremely dry, and it can really make some people dehydrated. Are you drinking plenty of fluids before and during your flight? That really makes a big difference when I fly.
That sounds like a reasonable diagnosis. Don't forget the importance of drinking lots of water before the flight. Once you're dehydrated, it's too late. The damage is done and no amount of water will force the fluids back into you on a cellular level.