4 miles-38:45 & strength training

Slight pain on inner left shin but nothing too bothersome. Took it easier--I'm trying to work in an easy/hard alternating schedule. I read that you should vary every workout by 10 minutes to keep some easier. I think I'm hitting a wall and training at 9:13s instead of 9:30s isn't increasing my speed, it's just wearing me out and making every workout tough.

Considering a 10K and a 5K in the next month. Going to try to up my weekly mileage a little for that 10K.