8 miles again a little faster than expected

I wonder if the higher heart rate running (8K and sunday long run) gave me a little shot in the arm or if it's just the weather. 8.3 in 1:28:32 (10:41 min/mi) and 137 bpm. Sad that I'm calling that an improvement! It was 70/62 at 5:50 and 71/63 when at 7:20 when I finished so it wasn't super cool.