I am testing my limits. The plan: run an all out mile until my legs tie up, and I collapse. Trying to see how far I can last, and how many days in a row I can maintain this plan before something makes me stop. Also, once I get the appropriate data, I'll take a few days off, and see what I can do after the break, then resume typical training, and see if this has any long lasting benefit or detriment. Baseline mile time: 4:36. Wish me luck.