Funny, but I was just thinking about that as I ran errands today in temperatures hovering just above 0* F here in Boulder.
A long time ago, after a big fight with my girl friend, I decided that I would go off and be the macho manly dude and do some solo winter ski camping. The temps around Alamosa were going to be below zero–perfect setup, right? The first night I set up my tent next to my car. It was -20* F, but I was comfy in my REI +15* bag, with fishnet long underwear, polypro over that, hat/gloves, Levis and a burly Holubar hooded parka (anybody remember those?).
The next day I was feeling frisky, so after a big breakfast in Alamosa I drove to the top of the Molas Divide (elev. 10,880'), put on the skis and 50# pack in 3 feet of powder, and skied down a summer service road several miles until I couldn't see or hear the highway. I set up the tent, stockpiled a big pile of firewood (aspen), and ate dinner well after dark. This was during Christmas week, so things got dark at 5 PM. There was absolutely no breeze, but it seemed a little colder than the night before. After a couple of hours trying to get the aspen to properly burn, I crawled into my bag.
About 3 AM I woke myself up with fairly uncontrolled shivering. I realized that I must be going into stage I hypothermia, so I mustered all my energy to try to get my Optimus 8R lit. It probably took 10 minutes to light that stove, with cold shaking hands and a Bic that didn't want to light. I finally got some water boiling, and I pounded down 3-4 Cup-O-Soups, a couple of hot chocolates, and more hot drinks with snickers bars. The shaking went away, and I now had a sort of warm glow feeling. I had just enough awareness to realize that I was either going to be all right, or else I was entering stage II hypothermia. Since it was 3-4 miles and 500-600 vertical feet to get back to the car at the pass, and also the business of packing everything up, I decided to take my chances and try to sleep. One of two things would happen, right? I would either get some decent rest, or else I would die in my sleep. I was too tired to not chance it.
I woke up around 7 or so with the first light, had my coffee, and I decided that I would just pack up and get the hell out of there. It was a fair struggle to ski back up the road, with that pack load and the need to change ski wax for better grip, but I finally made it to the car. I drove into Silverton and bellied up to the counter of the diner for some steak and eggs. I asked the weathered old cowboy sitting next to me how cold it got last night. He said, "It was -31* F at my place, why do you ask?" I told him where/how I spent the night, and his reply was, "Well, yer a stupid son-of-a-bitch, 'cause it had to be -34* or below that up there. Yer lucky to be alive." I agreed with him. And I bought him his breakfast.
I try not to do that sort of stuff anymore. I mean, I'll still buy a cowboy a meal, but I hope to not choose to sleep outside when it's much below zero.