Question

We Feel uncomfortable at high altitude

Answer 1

Answer:

Explanation:

there is less oxygen so we try to breathe more oxygen by that we use our lungs and hence they are pumped up.so usually our heart gets heated up.

Answer 2

Answer:

Less oxygen(of course), thin air, that bad junk food you ate before starting your trek.........

Explanation:

See, the gravity of the earth is huge and it holds all gas molecules, including oxygen, close to itself. Most oxygen is held below 18,000 feet and Mt Everest itself has height more than 29,000 feet. Try holding your breath for more than 30 seconds and you'll feel bad.....

So, the answer you're probably expecting, other than the nonsense I have written above, is atmospheric pressure is low at high altitudes, so air is less dense. Hence,a lesser volume of oxygen is available for breathing. With so much less oxygen, your body has to breathe more to get the same amount of the essential molecule. This leads to the shortness of breath, dizziness and tiredness indicative of altitude sickness.