I hit the wall earlier this week. Hitting the wall was common for me, years ago. But so uncommon now, that I was actually frightened and confused, and headed towards doing something stupid. This subject: "Hitting the Wall" is not a common subject on survival forums or survival blogs. It can be a very serious event, and death is one possible result. So......I think my experience earlier this week was partly early stage hypothermia, part physical exhaustion, and part low glucose level (OK OK part being 72 y/o) As I stood there in two feet of snow, at the edge of the creek I still needed to wade across, and the hill I then would need to climb.......I considered how pleasant it would be to just remove my pack and lay down in the soft inviting snow and take a nap. Over the last fifty years I've had entirely too much experience with hypothermia, both personal, and dealing with hypothermic clients and assistant guides. So......I am pre-programed that the instant I start thinking of taking a short nap, I instantly switch to if I do I will never ever wake. You would think that that awareness would frighten you so that you would abandon the thought of a brief nap. Strangely it does not........and many in the arctic die, because they can't over ride the sweet seduction of a brief nap.....a brief and fatal nap. So.....I am going to build a nap "Over-Ride" kit, specially for those situations. I always have food in my packs, but strangely that is not what comes to mind, when I am being seduced to the big sleep. I am hoping the sleep over ride kit can be programed as the default alternative to nap.