Today I went to the track and ran 8 x 800 meters. Times were 3:30, 3:28, 3:26, 3:24, 3:22, 3:20, 3:18, 3:15. I felt much better today and ran a disciplined workout. The humidity was very low. My heart rate was 150 bpm at 6:40 mile pace and 156 bpm at 6:30 mile pace.