At which altitude does the air begin to be noticeably thinner?
At 12,500 feet the air becomes thinner and oxygen becomes lower making it difficult to breathe.
Last updated on 19 May 2023
High altitudes may mean ambient pressure can drop below vapour pressure hence, you might feel lethargy, sometimes unconciousness and if you are unable to cope up then connect with a doctor to know the best treatment.
Once you have mastered the belly breath, you can add resistance to your exhalation by pursing your lips and exhaling forcefully, and this is what mountaineers call the Pressure Breath. This is one of the most important breaths for climbing at high altitudes that helps combat the decrease in atmospheric pressure
High altitudes can cause low oxygen saturation levels or desaturation of an individual's blood. It happens because of low atmospheric pressure at high altitudes. Oxygen saturation levels refer to the extent hemoglobin is bound or saturated to oxygen.
Humans can certainly experience reverse altitude sickness, known as high-altitude de acclimatisation syndrome (HADAS). When people who live at low altitude have adjusted to a high-altitude, low-oxygen environment, they can get any of a large number of possible symptoms of HADAS when returning to a lower altitude.
Any level above 8000 feet above sea level one can experience altitude concern
Hb Test, Hb
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