I'd love to have just one of these opposing fans join one of our players on a week of his mission.

Sure - he'll probably have some bands to use to work out for an hour in the morning. But it will be a revelation in what a mission really is when they realize that these kids really are missionaries. They don't go to the weight room. They don't have more than about an hour to even work out at most. They really are spending most of their days contacting people and teaching lessons. Going on a mission isn't 2 years of football prep with an occasional service project mixed in.