I like using one QB. If we have two that are relatively equal, then we can't afford to have one on the bench. They need to be on the field at running back, receiver or defensive back. I'm not going to waste an athlete on the sidelines.
My thing about looking good is that it should be the character. If I'm playing a character who's concerned about his body - an athlete, say - I'll get in shape. If I'm playing a character who doesn't or wouldn't, I don't. I almost never get in shape for a movie, even though I know it would be a good career move.
Had I been a great athlete, I'm not sure I would have even gone into coaching. I may have turned out feeling that my life ended when my athletic career ended, as happens so many times with various athletes.
I'm not advocating the strenuous life for everyone or trying to say it's the choice form of life. Anyone who's had the luck or misfortune to be an athlete has to keep his body in shape. The body and mind are closely coordinated. Fattening of the body can lead to fattening of the mind. I would be tempted to say that it can lead to fattening of the soul, but I don't know anything about the soul.