A new report has found college football players suffer more concussions during practice than in games.
The research published in JAMA Neurology tracked players from 6 division one schools over 5 seasons.
They found 72 percent of concussions happened during practice.
In total there were 528 thousand head impacts over the 5 seasons with 68 of the monitored players sustaining concussions.
Researchers hope these findings will encourage the NCAA to change training activity protocols.
The NCAA president says the report gives them new information to learn from and modify rules.