Playing professional football is a dream for many--but it's also a high-pressure, grueling job. If you're the pro player on the field, millions of people are scrutinizing your every play, expecting you to make your blocks, outsmart your opponents, move the ball to your end zone, and score. To play at 100 percent on Sundays, you are constantly preparing for the next game--practicing, lifting weights, going to meetings, or watching video. Throughout...