Most frequent fliers—especially flight attendants—are all too familiar with feeling bloated, sniffly, and fatigued after a long-haul flight. It comes at no surprise that traveling at 37,000 feet at 575 miles per hour inside a pressurized bullet filled with dozens of other people can take a toll on our bodies and immune system. To help you feel at-least semi-refreshed upon landing, here are tips and tricks on how to stay healthy while traveling, according to flight attendants (including yours truly).