Originally Posted By: CouchToWhitney
[quote=CouchToWhitney]

I felt fatigued, sleepy, and a very tiny bit lightheaded and dizzy shortly after leaving Trail Camp, at around 7:10 AM. At first I thought that it might be AMS, but that doesn't seem to be the case since it went away when I climbed higher up.

But after an hour or so of slogging along the brain awakens to a sense of responsibility to the body, and I gradually begin to take an interest in my surroundings.
British mountaineer and author Frank Smythe,
Climbs and Ski Runs (1930)