BeDrinkable wrote:You know, it's a funny issue. I recently gained 10,000' in two days (2400' -> 7500', then 7500' -> 12,600'). No issues. But two years ago I was backpacking at a lake just under 8000' after gradually gaining the elevation, and it just about knocked me out. The gradual gain is definitely the way to go, at least if you're going to be sleeping at altitude, but it can strike mysteriously too! You can minimize the risk, but I think unless you live high, it's always there.
RayMondo wrote:I expect that my base level is now elevated because I lived at over 4,000ft for many years, or at least I should be able to adapt more quickly. I'm intending to ride the Campo Imperatore route again next year, so I should find out. Although I'm now 5 years older, in terms of adapting again, it's not supposed to wear off.
RayMondo wrote:For sure, after a while the blood haemoglobin level goes down when returning from higher altitude, but the ability to take a higher altitude comes more easily the more times you go. I haven't found what this body memory effect is called or how it works, but I'll do some deeper digging.
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