This winter I was only sporadically successful at riding my bike to work, despite the trip's length of a mere 2 miles. I am a wuss when it comes to exercising in the cold, mostly because my lungs fill with cold air and I start to wheeze. Anyway, I would say I managed to ride my bike to work 1/4 of the time this winter. Maybe less. Definitely not what I was hoping for.
Now that we've been in the 50s and 60s for over a week, I'm back on my bicycle, and boy does it feel great! I even left my car at the office this weekend so I wouldn't be tempted to use it. I am required to use my car at work sometimes, so I try to leave the car there and ride my bike back and forth. It seems to really help me avoid using the car.