Cooler and less humid this morning with some foggy patches. I slept an additional 1/2 hour, leaving about 20 minutes later than usual, but managed to make up most of the time (by averaging around 20 mph), getting to work only about 5 minutes late. I felt fairly strong even on an empty stomach-the heat has been robbing me of my appetite recently and I only had half a sandwhich, some sun chips, and a tomato with dressing for dinner last night. Saw a lot more bikers than at my normal time and dropped them all (not that I was racing, just stepped up the pace a little above my usual). I'll slow it down and spin home in the heat of the afternoon. Spinning and staying in my cardio zone (I'm guessing here as my HRM is broken and I'm waiting on the replacement) is keeping my from burning out and I feel much better at the end of the week. My left knee is also feeling much better, although it still clicks loudly going up and down stairs.