Some doctors think the airplane is a dangerous place, 1 for the old or the unhealthy. Anyone with a heart disease or a lung problem can notice the difference much sooner. Even healthy people find it difficult to concentrate after hours of breathing less oxygen than usual. So anyone who has had a heart attack should not fly for at least two weeks after the attack. People with bad colds will 2 get earache during take-off and 3. Sitting on a plane for many hours gives everyone aches and pains, so you should take some exercise, especially on long flights.
Crowded airports, long queues and 4 cause stress and high blood pressure. So, be careful! Flying is the safest way to 5, but is it the healthiest?