This is insane. I thought I was pushing my body but your a different beast all together. Please dont tell me your capable of a 17 mins 3 miles by yourself. I need the nerves of a race to push out that sort of time. I'm sure you dont need me to tell you about overtraining but beware of it, reckon I gave myself a cold for a week, just pushed myself to much for a few more days than I should of. No doubt your body is better used to it though.