1. Put your legs up
Sitting for long periods can cause fluid buildup in your legs, which can lead to muscle soreness and even blood clots. As soon as you reach your destination, lie down on the bed or floor and prop your legs up on the wall or headboard for 15 minutes. It will drain the fluid and reduce swelling.
2. Hit the gym
You might feel completely ravaged when you land, but the best way to get some energy back and your blood flowing again is to exercise. If you're not a big gym person, go for a run or a brisk walk around your destination. It will also help feed oxygen to your brain and muscles after spending hours in the oxygen-reduced environs of the plane.
3. Stay awake until a regular time
Perhaps your first thought after spending 10 hours sitting upright and listening to crying babies is to catch up on all that lost sleep. But that post-flight nap won't allow your body to adjust to your new time zone and will leave you feeling jet-lagged. Power through and stay awake until your usual bedtime; you'll barely notice you're half a day ahead.
4. Cleanse with some saline solution
The dry air and circulating germs on an airplane can leave you susceptible to nasty colds. Flushing your nose out with saline solution after a flight clears your nasal passages of dust and germs, decreasing your chances of getting sick.
5. Carbo loadHigh carbohydrate intake leads to higher levels of insulin, which help your body adjust to a new eating and resting schedule. Don't stress out too much about the calories; it's just one day. And having lots of starches in your system makes the transition to a new destination a whole lot easier.