Rules and regulations have been altering college football since its inception.
Bear Bryant's 1954 training camp at Texas A&M lasted ten full days in the Texas summer heat and had no water breaks by design. The Junction Boys book romanticizing Bryant's practices was published in 2001, and the movie was filming on the day Korey Stringer died at Minnesota Vikings training camp after running a 108 degree temperature and suffering organ failure.
Figuring out that there's nothing masculine or tough about heat stroke is still a work-in-progress. Jordan McNair has only been dead for a year.