I've had a bit of an interest in getting an early start on cycling to work instead of driving, but what with all them thar polar vortexes, it looks like spring is going to be very late.
I know how to dress nice and warm, but the issue that I would encounter with cycling in sub-freezing weather is my face, since I have glasses. Most people who do cold weather cycling simply wear a ski-visor, or a full balaclava, but that would just cause my glasses to fog and leave me with choosing between frostbite or blindness. (and my commute to work is about 10 km one way)
Is there anything that can be done to prevent glasses from fogging underneath full face coverage?