Sherpas

Sherpas are renowned for their climbing skills and superior strength and endurance at high altitudes. They were able to survive up in the mountains at around 4 kilometers. It is because of specific gene "EPAS1 gene" that allows them to use up to 40 percent less oxygen than the average human and able to survive in such altitude for so long. For most people, going up as high as 3 kilometers (10,000 ft) causes their hemoglobin levels to rise. But the EPAS1 gene doesn’t let their hemoglobin levels rise beyond a certain extent, which prevents heart-related problems that normal people would experience. Photo Courtesy: @pramin.osiris

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