At high altitudes, atmospheric pressure is lower, so there is less oxygen in the air. Our bodies struggle to absorb enough oxygen, making us feel dizzy, breathless or tired. This is why people need to rest and adjust gradually at high elevations.
Class 7 Social Science Exploring Society: India and Beyond
Class 7 Social Science Chapter 2 Understanding the Weather question answer
People feel breathless or tired at high altitudes because the air pressure is lower, which means there is less oxygen available. Our bodies must work harder to absorb oxygen, often resulting in dizziness, fatigue and breathlessness. This condition is more noticeable above 2,500 meters. That’s why climbers, tourists and soldiers are advised to acclimatise gradually. Without proper adjustment, one may suffer from altitude sickness, a condition caused by the sudden drop in oxygen levels at higher elevations.
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