oh, one thing to note...

My left knee has started to hurt. At first I thought it was the weather, as it hurts more in the cold (a well-deserved thank you goes out to two accidents that are to blame for permanently injuring my knee); but now I'm wondering if it's this exercise + stop & go traffic (this morning I spent 6:30-7:10AM driving about 3 miles. Apparently that's what happens when a big rig turns on its side and the driver is unconscious.) or if it really is just the cold. Hopefully it's not the exercise and it's just the cold, as I don't want to stop exercising...