I've been commuting to work since May now, and this morning was my first day riding with frost on the ground. I'm fine about it from a safety perspective, but it seemed to me a much more physically challenging ride than normal, even allowing for the wind, etc. My boss (who also bikes) said that he thinks the frost makes the road "stickier" hence creating more resistance... Any truth to this or is there some other reason or it is all in my head?

Also, anybody have any ideas how I can distribute the warmth from the sweat running down my back to my icy fingertips?