SAMA HOOLE: The human body is a furnace. Fat is high-quality fuel that burns hot and long. Carbohydrates are kindling that flares up bright and dies out fast, leaving you shivering and weak.

Here's a question worth asking: why did every successful cold-weather civilisation prize animal fat above everything else?

The answer is pure thermodynamics, not culture or preference or tradition.

Your body generates heat from metabolising fat, not from metabolising… pic.twitter.com/F6CLp9Yi3t

— Sama Hoole (@SamaHoole) November 6, 2025

Here's a question worth asking: why did every successful cold-weather civilisation prize animal fat above everything else? The answer is pure thermodynamics, not culture or preference or tradition. Your body generates heat from metabolising fat, not from metabolising carbohydrates. Inuit standing in minus 40 degrees eating seal blubber stay perfectly warm without modern clothing. Modern hikers in minus 10 degrees eating energy bars become hypothermic within four hours even with Gore-Tex and down jackets. The human body is a furnace. Fat is high-quality fuel that burns hot and long. Carbohydrates are kindling that flares up bright and dies out fast, leaving you shivering and weak. This isn't opinion or preference or philosophy or some ancestral health woo. It's basic thermodynamics.

But please, continue eating pasta before your winter marathon. The emergency blankets are very shiny and you'll look great in the photos.