Hydration is so important, especially while you’re traveling. It can be tough to remember to drink enough water while you’re out exploring or when you’re flying, but try to bring a water bottle with you wherever you go. Dehydration can make you feel fatigued and generally run down — not to mention the toll it takes on your immune system. If you do catch a bug, you’ll need to drink lots of water to help your body fight off the infection.