Shortness of breath is the most common symptom of altitude sickness when climbing Kilimanjaro. It happens because your body isn’t able to take in as much oxygen as you’re used to.
Some climbers may feel it already on their first climbing day, just as they might experience shortness of breath when climbing stairs. Others may only feel that it becomes harder to breathe above 4,000 meters (13,000 feet) of elevation. Sooner or later, however, everyone will experience shortness of breath on the climb – while climbing that is.
If you are in good health, it is unlikely that you will experience shortness of breath while resting.
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