Easy running today but upper quads were a little sore from the 4x100 sprints. This tells me that I have not used my fast twitch muscle fibers and they are sore from the effort yesterday. I probably need to incorporate more 4-6x100 type efforts into my routine. Ran at the normal time (4:45am) and route (Provo River) with Sasha for 10 miles and then did 125 push-ups, 125 sit-ups and ran two more miles on the BYU indoor track. Outside I was running about 7:20-30 pace easy and when I ran inside with what seemed to be the same effort I was running 6:30-45 pace. It seems to make a pretty big difference running in shorts with the lights versus in the dark with tights on. I have noticed this in the past as well when I would run in the early morning versus the late afternoon. In the morning I would have to work to run sub 7:00 pace but in the afternoon I would run an easy run and 6:45 would be very relaxed. For me it seems that the difference from morning run to afternoon run was at least 20 seconds per mile with waht I percieved as the same effort. It would be interesting to see what the heart rate says at the same pace in the early morning versus a late afternoon run. I have an appointment with the chiropractor on Monday so we will see what he ahs to say about my back. This has been a rough week for me running wise so hopefully things will feel better next week. | 