To be a successful in American Football, a player needs to be strong, fast, agile, and have full command of their team’s playbook. A quarterback’s mind needs to be able to quickly recognize a defense and instinctively react. The wide receivers need to know their routes. The defensive backs needs to understand their coverages. The ability to for these players to understand the game comes from realistic game speed repetitions. On the field practice can only go so far, as the National Collegiate Athletic Association (NCAA) and other governing bodies limit practice time. Additionally, more practice means more chance for injury and less time for studying film or the playbook.