Question

Why do Some people face breathing difficulty in hillstations?

Answer 1

Some people face breathing difficulty in hillstations due to reduction in the air pressure.

As we go up, we take in the less dense air. And since it is less dense, the molecules of the air are far apart from each other now and hence the amount of oxygen you take in with one breadth will become less.

And when you fail to breath at the required rate, you tend to get suffocated.