"This clinical source recommends several practical ways to relieve and prevent post-flight swelling: lie down with the feet elevated against a wall so gravity can improve circulation, soak feet and ankles in Epsom salts, eat magnesium-rich foods (for example, dark chocolate), stay well hydrated, and start walking or exercising as soon as possible to reduce swelling and help counter jet lag." - Sophie Friedman Sophie Friedman Sophie Friedman is a journalist, editor, and fact-checker specializing in travel and anything related to it. She also writes for AFAR, Fodor's, and The Infatuation, and was previously editor-in-chief of Michelin Guide US. learn more