I had to take a "rest day" today, not so much because of the saddle-sore thing, but because my legs were feeling a bit too wobbly to really consider going in all the way to work. I think I'm going to alternate days for a week or two, until I've developed enough muscle to do this every day.

Good thing I have a few months in which to get used to this before I get into winter riding. (Eep!)