I woke up this morning in the five o'clock hour, as I do several times each week. Trying my best to exert the least amount of energy as possible, I dressed, drank a glass of water, downed a piece of toast with peanut butter, and headed out the door. Pitbull thumped in my earphones as I shuffled in the cold, misty morning. As I crested a hill and caught a steady pace, I closed my eyes for a moment and considered keeping them closed. I wondered if I could master "sleep running". It is a great idea and a wonderful way to kill two birds with one stone. I could catch some z's and get in my weekly mileage quota, all at the same time. Then I thought of my mother-in-law and my promise to be a safe runner, and I opened my eyes and pushed harder, pushing my body and mind awake. As I trucked along I thought, "I wonder how much faster I could be if I wasn't so tired all of the time?" And then, I thought about all of the things I'd be better at if I wasn't s...