"Maybe five extra push-ups won't matter that night, but what if you do five extra push-ups twice a day six days a week for a year? Or for fifteen years, as I did? Eventually you realize it does make a difference. I was one of those that did extra. If Steve said, "Do a hundred toe-raises and twenty pull-ups," I would do a hundred and five toe-raises and twenty-two pull-ups, while he counted."