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Before Your Trip:
Here are just a few precautions you can take ahead of time:
• Make sure your immunizations are current.
• If possible, delay your trip if you're not feeling well.
• If you're prone to air sickness, ask for a window seat over the wing.
• If you have any health questions, or if you suffer from a chronic ailment, motion sickness, or fear of flying, ask for advice from your physician.
• Stress is bad for you. Reduce stress by allowing plenty of time to check in and reach your departure gate.
• Always carry your medication with you—never pack it in baggage you're planning to check.
• Wear loose, comfortable clothing and shoes for your flight.
During Your Trip
Here are a few things you can do to feel good while you're flying:
• Eat lightly during your flight.
• Stay hydrated while you fly.
• Leave room under the seat in front of you so you can stretch out your legs.
• If conditions permit, try to stand up and walk around the cabin every once in a while.
At Your Destination
Here are a couple of things to remember once you arrive:
• Never purchase local medications unless you're familiar with them.
• Wear sun block and sunglasses in the tropics and at high altitudes.
• Drink a lot of water to minimize altitude sickness.

These sites offer comprehensive information about healthy travel: