Bears and other wild animals hibernate or sleep during the cold months and then they just wake up for springtime! They really know better.
Sometimes you would wish that humans can do the same and not have get up in the morning, prepare breakfast, shovel the driveway, and go through the snow in order to go to work. But life is just like that and we have to live with it. Or we can follow the animals and live like Tarzan in the jungle. That is also possible.
But in order to get just a sampling of the comfort that the animals have during hibernation, we have to keep ourselves warm at night. We could do this by having a heated mattress pad and a cap over our heads as well sleep. You do not want to catch a head cold you know.
Ahhh..if only we can sleep tight that long huh?