Human Hibernation as Cultural Phenomenon.
Economists and bureaucrats who ventured out into the countryside after the Revolution were horrified to find that the work force disappeared between fall and spring. The fields were deserted from Flanders to Provence. Villages and even small towns were silent, with barely a column of smoke to reveal a human presence. As soon as the weather turned cold, people all over France shut themselves away and practiced the forgotten art of doing nothing at all for months on end.
In the mountains, the tradition of seasonal sloth was ancient and pervasive. “Seven months of winter, five months of hell,” they said in the Alps. When the "hell" of unremitting toil was over, the human beings settled in with their cows and pigs. They lowered their metabolic rate to prevent hunger from exhausting supplies. If someone died during the seven months of winter, the corpse was stored on the roof under a blanket of snow until spring thawed the ground, allowing a grave to be dug and a priest to reach the village. - via Ran Prieur
Those guys had the right idea! Of course, the capitalist juggernaut could never halt long enough to make that happen.