What is the Limit for Practicing for College Football?

Well the actual limits or rules established by the NCAA for practices are to be no more than 20 hours per week which inlcude no more than 4 hours a day while in season for a college football program. There are also limits placed on coaches that prohibit them from attending various events during the offseason such as 7-on-7 scrimmages. The limits for football programs while in the offseason are for players to spend no more than 8 hours for various workouts.

http://espn.go.com/blog/bigten/post/_/id/2650/michigan-allegations-suggest-friction-remains