15. Hydration
Even if you don’t drink a lot of water in your daily life, when it comes to traveling with an airplane you should think again! As we explained earlier, the air in the airplanes gets really dry and that can affect you a lot. It is estimated that for each hour that you are on the plane traveling you lose about eight ounces of water. That’s a lot! Think that if your flight lasts 10 hours, during this time you will lose about two liters of water from your body!