Travel tip: Flying dry

plastic-water-bottleAccording to the Centers for Disease Control (CDC), the air inside planes has anywhere from 10 to 20 percent humidity, which can dry out mucous membranes and make people more susceptible to germs. Staying hydrated throughout the trip can prevent nasal passages from being irritated, so load up on water and skip the carbonated beverages and alcohol. Sipping on water assists with immune function and, in some cases, even helps with jet lag. For longer, international trips, pack electrolyte-friendly snacks — a banana, nuts, or a small bag of fortified cereal — to keep drowsiness at bay.

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