Thereâs a reason animals hibernate in the winter. Itâs cold, itâs dark, and all the good snacks are either dead or buried under a foot of snow. Humans? We just keep trudging along, hoping this is the year Punxsutawney Phil wonât see his shadow. Too bad for us he did â and for those who believe, now weâre in for more than a month of icy temps and dark skies.