Hibernation

I find myself wondering about the change of seasons more and more lately as Spring rolls in on Maryland’s capital. Maybe it’s just this town of 36,000, but it seems as if hibernation settles in at the first sign of frost and doesn’t dissipate until the first robin returns to work. Such a peculiar occurrence, if you ask me, seeing how this “small town” welcomes over 6 million visitors a year with little slowing during the frostier months. Does this happen elsewhere? If so, why such disregard for social interaction during colder climate? Do geographically colder cities experience year round hibernation sequences?