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Mar 2, 2016 at 23:31 history edited GHB CC BY-SA 3.0
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Mar 2, 2016 at 16:17 comment added GHB @DanHulme, thanks, corrected!
Mar 2, 2016 at 16:16 history edited GHB CC BY-SA 3.0
Corrected mistake
Mar 2, 2016 at 16:10 comment added Dan Hulme The problems of high altitude are nothing to do with the mechanics of inhaling, it's simply because when the air has lower pressure and density the amount of oxygen available to be absorbed is less. If it were about the physical effort, it would be much harder to accidentally fly into a situation where hypoxia is a danger.
Mar 2, 2016 at 15:50 history answered GHB CC BY-SA 3.0