Yeah, I am SO tempted to go out after work and go do speed runs... But I know if I do it will cost me more than I gain. One more day, two at the most, and I will be much better off. Chances are, if I push it, I'll be exhausted in a couple of days, and in a couple of weeks will wind up flat on my back sick for 5-6 days. If I push it too long on the endurance training, my immune system takes a nose-dive.