It was cold and restless sleep at our high camp on Bolivia’s Huayna Potosi. As I think back, it was actually more like quiet time, except for the constant banging of the tent flap out in the frigid, high-altitude night. Sometime in the very early morning, I got up and went outside to relieve myself and, while doing my business, marveled at how clear and full of stars the sky was. But that marvel was tempered by my personal acknowledgment that ultimately the clear skies would just mean even colder temperatures. At least, I reasoned, since there was no threat of snow, I wasn’t going to have to get up and shovel any of it away from the tent in the wee hours of the morning. I quickly got chilled, and so, once back in the tent, I pushed myself deeper into my minus 25-degree bag and cinched the hood tightly down around my head. Cinching down and tightening the hood, along with a persistent need to go outside and relieve myself, periodic dozing off, and a mental organization of the rope-up logistics, occupied the bulk of my supposed sleep time.