living on the edge

is riding at 5:30 in the morning without a headlight. Oh, I have bright blinkys on the front back and side but they don't show me the road. My headlights are on the fritz (what a term) and so I have been sticking to lighted city streets. Fortunately I have yet to come across the odd baseball-sized rock or two-by-four in the road. Riding in town is a challenge, it's hard to get a good rhythm going and my heart rate oscillates wildly. Can you say low level interval training?