How can I avoid high altitude sickness?

It depends. You might get it or not. Some people are never altitude sick. Some are, when they are already on the altitude of few meters from the ground.

Altitude sickness reduces the amount of oxygen in the brain, causing such symptoms as dizziness, shortness of breath, and mental confusion

A high level of elevation, or high up in the sky

The lowest recorded case of serious altitude sickness (HAPE) was at 2500m in a climber in Japan. However, most people need to travel above 3000m and stay there for at least 12 hours before symptoms...

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