For a 10-hour long-haul flight, medical experts in 2026 recommend getting up and moving at least once every two hours. Prolonged sitting in a cramped economy seat increases the risk of Deep Vein Thrombosis (DVT), which are blood clots that can form in the legs. When you stand up, try to walk the length of the aisle a few times to get your blood circulating. If you are unable to get up due to turbulence or a sleeping neighbor, you should perform "in-seat exercises" every 30 to 60 minutes, such as ankle circles, foot pumps, and knee lifts. Staying hydrated is equally important, as it naturally encourages you to use the restroom, forcing a movement break. Additionally, wearing compression socks can significantly reduce swelling in the feet and lower legs. By moving regularly, you not only protect your vascular health but also reduce joint stiffness and general fatigue, making the "jet lag" recovery much smoother once you land at your destination.