One good, one bad

Did the reservoir run yesterday in about an hour -I was finally able to put the much needed 6 miles under my belt. It was a beautiful morning, I felt strong the whole time and I had a surprisingly nice finish. Today, however, was a different story. I headed out to do a 5 mile run around the river and was in pain not even a mile into it. Could have been because I didn't stretch properly, could have been because my muscles were fatigued. I did finish, but it was such a sloppy run. Tonight I rest, ice my leg & watch the Olympics.