College football fans get a little break for the summer, but the players do not (or at least, they don't take one if they want to win a lot). If a team is going to contend on the national level, top physical condition is a must.
For the football fan, shape is less of a necessity, but it should definitely be a concern. Staying in shape is the one thing that you can do to improve your quality of life that you have complete control over. (Unless you grow your own food, of course.)
If you want to check out the full Michigan State workout program, this video is a great start.