Wow, you guys are hardier than me. The Polar Vortex last year hit Minnesota like the winters of old. Also, this far north, it gets dark at 5PM in mid-winter. I hate riding in the dark. I put my bike away when daylight savings time ends in October, and bring it out again when the high temperature is above 50 degrees (May). In winter I get my daily workout by walking around one of the city's lakes (3+ miles), after dark.