The moment I take off my shirt I start to get a sense of how our primordial ancestors would have handled the same march. Trudging forward I don’t feel the bite of the cold the way I did before undergoing the regime at camp. Whatever heat I build up through exertion seems to stay in my skin as if I am wearing a wetsuit. I can feel the cold, but it never penetrates. I never shiver. Instead, I focus on the point behind my ears that Hof says will help activate my brown fat and send waves of heat through my body.
