It's very hard in the beginning to understand that the whole idea is not to beat other runners. Eventually you learn that the competition is against the little voice inside you that wants you to quit.
FASCINATING FACTS We are about 1 cm taller in the morning than in the evening. The cartilage between our bones gets compressed by standing, sitting and other daily activities as the day goes on, making us just a little shorter at the end of the day than at the beginning.