When you work in a long tube at 40,000 feet, surrounded by hundreds of people in very close proximity, good health is a necessity, not a luxury. It's not something that I take for granted, and I have always been proactive in taking care of my health.
I have always tried to eat healthy foods, get plenty of rest, exercise regularly, drink lots of water, and just take care of myself in general. It's not always easy though, when you live on the road.
Restaurant food is the norm, healthy foods aren't always readily available. Sleep patterns are frequently irregular, as a schedule changes back and forth from day flying to night flying. Germs are rampant in the cabin, and that is especially true for those that passengers bring on with them.
Astroprof sent me a link to this CNN article about germs in the cabin. It spells out what flight attendants have long known: that people travel when they are sick, thus contaminating people around them. The article contains a list of things that can be done to lessen the possibility of becoming infected with something, and most of the items on the list are common sense whether you are on the ground or in the air.
It is the time of year for germs to be running rampant, so a little precaution the next time you fly should keep you healthy, and me as well.