My body was really struggling once I got above 11,000 feet elevation. It took me 3 hours and 32 minutes to reach the saddle at 11,787 feet. After resting for 23 minutes I began hiking again. In a short time I was again out of breath and had to stop. Beyond the saddle I frequently needed to stop. At 12,350 feet I sat down on a boulder on vomited. I was experiencing high-altitude brain hypoxia. The drop in oxygen causes the body to prioritize oxygen distribution to the brain and lungs, slowing digestion and causing nausea.
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