We recommend that passengers prepare for a flight long before it takes place. How many times have we heard someone say they can't wait to go on vacation. It's also important to avoid pre-flight stress. One should obtain an adequate amount of sleep before beginning a trip, and try not to spend the night before packing and making last minute arraignments. Although these unique factors of long-distance flying do not pose a health or safety threat to most customers, there are guidelines you can follow that will improve your comfort level during and after a flight.
Most medical authorities agree on a few basic rules.
Most important is that passengers should stretch and perform isometric leg exercises and simple arm movements, especially during long flights involving prolonged cramped seating arrangements. While seated, you can do some simple exercises that may be effective at increasing the body's blood circulation and massaging the muscles. We recommend you do these exercises for three or four minutes every hour and occasionally get out of your seat and walk down the aisles. Each exercise should be done with minimal disturbance to other passengers. None of the following exercises should be performed if they cause pain or cannot be done with ease.