The primary cycling season here in the Midwest is May-Sept. Although my joints also prefer the warmth of summer... my heart, lungs, and waistline needs year-around exercise. I've tried other winter work-out activities.... but they haven't produced the same passion for doing them as does cycling.

So... this year I got a mountain bike. The big, fat, knobby tires seem to add enough resistance to give me a workout... at a slower speed. Going slower in the cold has some advantages when dealing with cold wind. So... I found that I can bundle up pretty well... ride harder (yet slower) and for only 20-25 minutes at a time. I am acclimating better to the cold while I get enough exercise to keep in shape. And... its FUN.