The book "The Endurance: Shackleton's Legendary Antarctic Expedition" mentioned about the group not able to eat carbohydrate for months. They had only animal products available to survive. They complained about lack of stamina and each physical tasks taking a lot longer to complete.
They were stuck on an Antarctic ice floe for 497 days, and you think it was the lack of carbs that reduced their stamina? What about the debilitating cold, the crushing expectation of a lonely death, or the general ice-induced boredom?
