I 'm very familiar with all of this since my main thing used to be mountaineering .
I 've been to 14,000 feet hundreds of times and even as high as 22,000 feet a few times , but it still hurts every time I come to altitude .
I 'm very familiar with all of this since my main thing used to be mountaineering and I 've been to 14,000 feet hundreds of times and even as high as 22,000 feet a few times , but it still hurts every time I come to altitude .