2.25 mile warmup then 3 X 1 miles @ 5K pace (6:00/mile) with 0.5 mile jog in between each. I couldn't get comfortable during the first mile. My upper body felt very tense. Finished in 5:54 and felt alright. Was a little more comfortable during the second but it hurt more. Got a little nauseous towards the end. Ran it in 5:52. Didn't really feel like running the last one. First quarter felt slow but was a little ahead of pace. Slowed down the second and third quarter and was 2 seconds behind at 0.75 miles so I sped up to make up the difference. Actually started to feel good during the last 0.25. Finished in 5:58. Ran 1.75 miles to cool down. While I wasn't as comfortable as I would have liked, it did feel good to get through it with faster splits than I had planned on. Avg HR = 148 (peaked at 175) Total Time = 1:01:25 | 