Phlllippines Duterte takes no shit as usual - get vaccinated or you're going to jail !!

[gerefan2]

The air pressure inside a passenger airplane is about half of pressure at sea level, or corresponding to an elevation of 5000 m.

:

5000 m is 16,400 feet! You would have severe hypoxia if that was the case!

Commercial aircraft are pressurised to a maximum of 8000 feet (2,400m), often less.

[christianpfc]

5000 m is 16,400 feet! You would have severe hypoxia if that was the case!

Commercial aircraft are pressurised to a maximum of 8000 feet (2,400m), often less.

I don't remember where I got the 5,000 m, you are right with 2,400 m:
https://en.wikipedia.org/wiki/Cabin_pressurization

As recent as last Summer (July 2020), I hiked from about 300 m elevation (Tramin) to Mount Roen 2,116 m in South Tyrol. Other than general exhaustion which is to be expected, I didn't notice an influence of the hight / reduced atmospheric pressure.

I don't remember if I hiked higher before (elevation above sea level and vertical meters hiked was not on my radar until a few years ago, when I planned trips by myself and had to calculate these - before I was with my parents or in groups and it was someone else's responsibility to make sure everyone can do the hike), the only I know for sure is Doi Inthanon, but there we drove up to the top.

When I make it to Mexico City (after the great success in Brazil last year, I plan to travel more in Latin America, when restrictions are lifted) I want to climb the volcanoes > 5,000 m.