I explored more of my backyard trail system on Mt. Sutro after work. I had a hard and stressful day, and really needed to jump on my bike to shake out my nerves. Being able to zone out and concentrate on something other than my job is such a valuable thing to me these days. Despite riding in the dark woods, knowing anything could be out there, nothing could stop me from braving the cold. I had my trusty new light system, which lit the way, as I did a few laps around the mountain.