Mount Everest is at 29000 feet, where the air pressure is 32 kPa [1], which is about a third of sea level's 101.325 kPa. People have climbed everest without sup

Mount Everest is at 29000 feet, where the air pressure is 32 kPa [1], which is about a third of sea level's 101.325 kPa. People have climbed everest without supplemental oxygen, let alone a pressurized suit. I imagine that the body would be fine. [1] http://www.wolframalpha.com/input/?i=air+pressure+at+29000+feet http://www.wolframalpha.com/input/?i=air+pressure+at+29000+f...