39 degrees when I left the house. A fine ride in, but I did 22 *hard* miles last night right before midnight, so I was pretty weary this morning. I love biking in the cold -- it's like swimming in cool water without getting wet -- but you really do have to work harder. So now I'm in a warm office and feeling that nice familiar ache in the muscles. I love that. I cannot wait for the temperatures to drop in to the teens and twenties. That's what separates the wheat from the chaff.