If anyone can do it, you can. But, I don't ride below 25 and rarely below 30. The wind chill factor you get from riding, even with no real wind around is not pleasant for me. Plus, there's the constant freezing and refreezing of the water/ice/snow by the side of the road, which, for a recreational rider, it's just not worth it to deal with. On the other hand, I do go out and do winter sports or hike when it's -10. I use this time to take a break from cycling, do other sports, or ride inside. I do usually get in at least one ride each winter month, when I ride my Jamis outside, instead of my road bike.